← Back to Blog · 2026-09-27 · 8 min read · Market Preview

Picture this: it's the first week of February. You've been watching iron ore on the Dalian Commodity Exchange, and the chart has gone almost comatose. Volume is thin, ranges are tight, and your breakout strategy has been chopped up three days in a row. You're frustrated — until you remember one thing you forgot to check: Chinese New Year. The entire industrial supply chain in China, the country that consumes most of the world's iron ore, copper, and thermal coal, is on holiday. You weren't trading a broken market. You were trading a closed one.

That's the thing about Chinese commodity futures: the calendar matters more here than in almost any other market. Construction crews down tools for winter and holidays, factories shut for a week and restock aggressively after, and the government intervenes in ways that have no Western equivalent. If you trade China futures without a seasonal map, you're flying blind. This article is that map.

Why China's Commodity Calendar Runs on a Different Clock

Western seasonality is mostly weather and harvests. Chinese seasonality is weather plus the world's largest construction cycle plus a state-planning layer on top. Three forces stack:

• The construction calendar. Physical steel demand in China follows the old trader's rhyme: "Golden March, Silver April" (金三银四) after the New Year, and "Golden September, Silver October" (金九银十) before winter. Concrete pouring slows sharply in freezing months, especially in the north.
• The holiday rhythm. Chinese New Year falls between late January and mid-February depending on the lunar calendar. Factories close for roughly one to two weeks, and the restart is gradual — workers don't all come back at once. February is structurally the weakest activity month of the Chinese industrial year.
• The policy layer. Winter heating-season production restrictions in northern industrial provinces, environmental inspections, and strategic reserve releases can override any seasonal pattern. The 2021 thermal coal rally — and its equally abrupt reversal after government intervention — is the textbook case. Seasonality tells you when risk is elevated; policy decides the direction.

Keep those three layers in mind as we walk through the major sectors. None of these patterns is a guarantee — they're a probability map, and the map needs to be checked against current-year policy and inventory data every single season.

The Construction Complex: Rebar and Iron Ore

If you only learn one seasonal pattern in Chinese commodity futures, make it this one, because rebar is the purest real-economy instrument on any Chinese exchange.

Rebar (RB) — Shanghai Futures Exchange

Rebar specs are friendly to retail traders: 10 tons per lot, minimum tick of 1 yuan per ton (so ¥10 per tick per lot), with day sessions from 9:00–11:30 and 13:30–15:00 China time and a night session from 21:00–23:00. The seasonal logic:

• February: Demand is dead. Construction sites are empty, mills keep producing, and social inventories (steel held by traders) build to their annual peak. Prices often drift or decline on weak turnover. This is a month for observation, not aggression.
• March–April: The post-holiday restart. Sites mobilize, inventories start drawing down, and the market prices in the spring construction push. This "destocking confirmation" window — watching whether weekly inventory declines accelerate — is one of the most reliable seasonal signals in the entire Chinese complex.
• May–June: Mixed. The initial spring impulse fades, and the rainy season in southern China slows outdoor work.
• September–October: The second construction window. Weather is ideal, and projects race to finish before winter. Demand often peaks here, though the pattern has weakened in recent years as China's property sector restructured — always check the current property and infrastructure data before assuming the old rhyme holds.
• November–January: Demand rolls over into winter. Prices tend to be supported by production costs and policy expectations rather than physical demand.

Iron Ore (I) — Dalian Commodity Exchange

Iron ore is 100 tons per lot with a 0.5 yuan/ton tick (¥50 per tick), so position sizing matters more here — one lot moves meaningfully with small price changes. The seasonal rhythm mirrors rebar but with an extra wrinkle: port restocking. Chinese steel mills hold iron ore at ports and replenish ahead of expected production. Restocking typically intensifies ahead of the March–April construction season and ahead of September–October, while mill profit compression (often in winter, when margins are squeezed) triggers destocking. Watch port inventory levels — they're published weekly and are the single best confirmation tool for the seasonal trade.

Practical rule: rebar and iron ore rarely trend independently. If rebar is breaking down on weak inventory draws and iron ore is holding up, one of them is wrong — and that divergence itself is information.

Hot-rolled coil (HC, also SHFE, 10 tons per lot) follows a similar but not identical cycle, since it serves manufacturing — autos and appliances — rather than construction. Manufacturing restocking leans more toward year-end and pre-holiday periods, so HC/RB spreads sometimes carry their own seasonal flavor for more advanced traders.

Energy and Chemicals: The Heating Season Trade

Thermal Coal (ZC) — Zhengzhou Commodity Exchange

Thermal coal is 100 tons per lot, tick 0.2 yuan/ton (¥20 per tick). The demand story is simple: Chinese heating season runs roughly November through March, and power demand peaks in the depths of winter and again during summer's air-conditioning load. But the trade is never that simple, because supply is heavily policy-managed. The 2021 episode — a sharp supply squeeze, prices spiking to multiples of normal levels, followed by the NDRC stepping in hard and prices collapsing — taught every China futures trader the same lesson: in Chinese energy, policy risk dwarfs seasonal risk. Trade the season with tight risk, and never assume a seasonal trend can't be ended by a government press conference.

Methanol (MA) — Zhengzhou Commodity Exchange

Methanol (10 tons per lot, ¥10 per tick) is a quieter but genuinely seasonal instrument. Winter demand from traditional heating and the switch to coal-based methanol production in colder months, plus winter logistics disruptions, have historically supported prices from late autumn into early winter. Spring tends to be softer as new capacity comes online and demand cools. It's a good instrument for traders who want seasonal exposure without the headline risk of coal.

PTA and the Textile Chain

PTA (TA, ZCE, 5 tons per lot, ¥10 per tick) connects to the textile cycle: fabric production in China's coastal clusters picks up after the New Year restart and again ahead of Western holiday order deadlines in autumn. The "Golden September, Silver October" rhyme applies to textiles too, not just steel. PTA also has a crude oil overlay, so it's a two-factor seasonal trade — useful to know if you're hedging or spreading.

Restocking Seasons: Copper, Soybean Meal, and Palm Oil

Not everything in China is about construction. Two restocking cycles matter for the metals-and-ag side:

• Copper (CU, SHFE, 5 tons per lot, ¥50 per tick). Chinese copper fabricators typically restock after the New Year restart and again in the second half of the year ahead of year-end production. Copper is also the most globally connected Chinese commodity — it trades with the LME in mind — so pure China seasonality is diluted. The cleaner read is the SHFE–LME price relationship and Chinese import profitability, which tend to widen around strong Chinese restocking windows.
• Soybean meal (M, DCE, 10 tons per lot, ¥10 per tick). Here the calendar is biological: South American soybean harvests arrive in Chinese ports roughly April through June, and US harvests from roughly September through November. Feed demand has its own rhythm tied to livestock cycles, but the supply-side seasonal windows — when crush margins and import flows shift — are the more tradable pattern for retail traders.
• Palm oil (P, DCE, 10 tons per lot, ¥20 per tick). Malaysian and Indonesian production peaks in the second half of the year, while Chinese and Indian demand for cooking oil often firms around festivals — including, notably, the pre-Chinese New Year stocking period. Monsoon and harvest news from Southeast Asia gives this contract its own annual arc.

The Best Months to Watch: A One-Page Calendar

Here's the condensed version — not a signal generator, but a map of where to focus attention:

One honest caveat: seasonal patterns in China have been noisier in the last few years than the backtests suggest. The property downturn has damped the construction rhyme, and policy interventions have become more frequent. Treat the calendar as a prior, not a prophecy.

How to Actually Trade It: Five Rules

Seasonality is a context layer, not a standalone strategy. Here's how experienced traders fold it in:

• Rule 1 — Demand confirmation from inventory, not from the calendar. Weekly rebar social inventory and iron ore port inventory data are free and widely published. A March rebar long only "counts" when inventory draws are accelerating. If the calendar says spring but the data says stagnation, believe the data.
• Rule 2 — Never fight the policy cycle. Before trading thermal coal, methanol, or any supply-restricted commodity, check the latest NDRC statements and winter production-restriction announcements. The fastest way to lose money in Chinese commodities is holding a seasonal position into an intervention.
• Rule 3 — Size for the quiet months. February liquidity is genuinely poor. Spreads widen, slippage grows, and a normal-sized position can get marked violently on thin prints. Either stand aside or cut size in half around the New Year window.
• Rule 4 — Use the night session as your information edge. Chinese industrial metals trade a night session (21:00 onward, China time) that overlaps with European hours. If you're in a timezone that makes the night session accessible, the overnight reaction to Chinese data and policy is where seasonal trends often accelerate or break.
• Rule 5 — Trade the confirmation, not the anticipation. The classic retail mistake is buying rebar in mid-February because "spring is coming." The higher-probability trade is entering once the restart is visible — inventory draws turning, basis firming, open interest building — even if you give up the first few percent of the move.

Test the Calendar Before You Trust It

Seasonality is one of those ideas that sounds obvious and only reveals its difficulty when you put real rules and real risk on it. Which months actually pay in the current regime? Does the March rebar pattern still work after the property reset? The only way to know is to run your system against real Chinese futures data — with realistic contract specs, session times, and drawdown pressure — before you commit capital.

That's exactly what we built XS Select for. It's a China futures evaluation platform where you can test your seasonal strategies on real-market data, with evaluations starting from $29. No hype, no promises — just a clean way to find out whether your calendar edge survives contact with the actual tape. The Chinese construction cycle has been running for decades. Whether you can trade it is the question worth answering.