← Back to Blog · 2026-10-22 · 7 min read · Challenge Guide

The alarm goes off. You open your terminal. The Shanghai Futures Exchange is about to open, and you have a choice: trade with precision or blow your account by 10:30 AM. For most traders attempting a China futures evaluation, the 2% daily loss limit is not just a rule; it is the primary adversary. It does not care about your fundamental analysis. It does not care that the Chinese government just announced a stimulus package for the steel sector. It cares only about one thing: your cumulative loss for the day.

If you are new to the Chinese commodity markets, the volatility can be deceptive. A single contract of Rebar or Iron Ore can wipe out a week's worth of profits in minutes if your position sizing is disconnected from your risk parameters. This guide breaks down exactly how to build a trading plan that respects the 2% hard stop, using real contract specifications and practical logic. We are not here to discuss "mindset" in the abstract. We are here to discuss tick sizes, margin requirements, and mathematical survival.

Understanding the Mathematical Reality of the 2% Limit

Before you place a single order, you must understand what 2% actually means in absolute terms for your specific account size. Many traders fail because they treat 2% as a vague "be careful" signal rather than a hard cash ceiling.

Let’s assume a standard evaluation account size of $10,000 (approx. 72,000 CNY). Your maximum daily loss is $200 (approx. 1,440 CNY). This is not a suggestion. If your account equity drops to $9,800 at any point during the trading day, you are failed. This is a trailing drawdown in many evaluations, meaning your highest equity point matters, but for daily loss limits, it is often a fixed intraday threshold from the start of the day or the previous close. Always check the specific rules of your evaluation provider, but assume the strictest interpretation: if your realized and unrealized loss hits -2%, you are out.

Why does this matter? Because in China futures, leverage is high. A small move in price translates to a large move in equity. If you do not scale your position size inversely to volatility, you will hit this limit before your trade idea even has time to play out.

Contract Specifics: The Hidden Traps in Rebar and Iron Ore

To design a plan, you must know the vehicle. The most popular contracts for retail traders in China are Rebar (RB), Iron Ore (I), and sometimes Crude Oil (SC) or Gold (AU). Let’s look at the two most common commodities: Rebar and Iron Ore.

Rebar (RB) on the Shanghai Futures Exchange (SHFE)

• Contract Unit: 10 tons per lot.
• Minimum Tick Size: 1 CNY per ton.
• Value per Tick: 1 CNY × 10 tons = 10 CNY (approx. $1.40 USD).
• Typical Volatility: RB often moves 30–50 ticks (30–50 CNY) in a quiet day, and 100+ ticks on volatile days.

If you trade 1 lot of Rebar, a 50-tick adverse move costs you 500 CNY. On a $10,000 account, that is roughly 7% of your account. You are dead. To survive the 2% limit ($200 loss), your maximum adverse excursion (MAE) on 1 lot of RB must be roughly 14 ticks (140 CNY). That is extremely tight. Therefore, for a $10,000 account, trading 1 lot of Rebar requires surgical entry precision, or you must accept that you can only risk a very small portion of your daily limit per trade.

Iron Ore (I) on the Dalian Commodity Exchange (DCE)

• Contract Unit: 100 tons per lot.
• Minimum Tick Size: 0.5 CNY per ton.
• Value per Tick: 0.5 CNY × 100 tons = 50 CNY (approx. $7.00 USD).
• Typical Volatility: Iron Ore is significantly more volatile than Rebar. Daily ranges of 50–100 ticks (25–50 CNY) are common.

Here is the trap. Iron Ore feels like it moves less in price terms (e.g., moving from 800.0 to 805.0 seems small), but each tick is worth $7.00. A 10-tick move against you is $70. On a $10,000 account, that is 0.7% loss. A 30-tick move (still a modest daily fluctuation) is $210, which breaches your 2% limit immediately. Iron Ore requires smaller position sizes or wider stops that are mathematically impossible within the 2% constraint for standard account sizes.

The Position Sizing Formula for Survival

You cannot guess your position size. You must calculate it based on your stop-loss distance and your 2% limit. Here is the formula every trader should put on their desk:

Position Size = (Account Size × 0.02) / (Stop Loss in Ticks × Value per Tick)

Let’s apply this to a realistic scenario on a $10,000 account trading Rebar (RB).

• Max Daily Loss: $200 (approx. 1,440 CNY).
• Trade Risk Allocation: Do not risk 100% of your daily loss on one trade. A prudent rule is to risk max 25–33% of your daily limit per trade. Let’s say you risk 500 CNY per trade (approx. $70).
• Technical Stop Loss: You identify a support level for Rebar. Your invalidation point is 20 ticks away (20 CNY/ton).
• Value per Tick: 10 CNY.
• Calculation: 500 CNY / (20 ticks × 10 CNY/tick) = 500 / 200 = 2.5 lots.

Since you cannot trade half a lot, you round down to 2 lots. If you traded 3 lots, your risk would be 600 CNY, which is 41% of your daily limit. If that trade hits stop, you have only 1.2% left for the rest of the day. This is dangerous. By sizing at 2 lots, you preserve capital for other opportunities or a losing streak.

Structuring the Trading Day: The Three-Phase Approach

China futures have distinct liquidity phases. Ignoring them is a primary cause of evaluation failure. Your trading plan must be time-segmented.

Phase 1: The Opening Volatility (9:00 AM – 9:30 AM CST)

The first 30 minutes are often chaotic. Spreads widen, and slippage is common. For a 2% limit account, do not trade the first 15 minutes. Wait for the initial auction price to settle. If you must trade, reduce your position size by 50% compared to your standard calculation. The risk of getting stopped out by noise is highest here.

Phase 2: The Mid-Session Grind (10:00 AM – 2:00 PM CST)

This is where trends often establish. Liquidity is deep. This is the optimal window for executing your strategy. Use the position sizing formula above. If you are up 1% for the day, you can consider scaling in, but only if your new total risk remains below the 2% hard cap. Never add to a losing position in this phase unless it is part of a pre-defined averaging strategy that keeps your total risk within the 2% boundary.

Phase 3: The Closing Rush (2:30 PM – 3:00 PM CST)

Traders close positions, and institutional rebalancing occurs. Volatility can spike again. If you are near your 2% limit, you must be flat or significantly reduced. If you are profitable, protect your gains. Do not try to "make back" a small loss in the last 30 minutes. The risk-to-reward ratio deteriorates as liquidity thins out near the close.

Handling Drawdowns: The "Circuit Breaker" Rule

A trading plan is not just about entry; it is about exit when things go wrong. In a 2% limit evaluation, a drawdown of 1% is a warning sign, not just a number.

• 0% to -0.5%: Normal business. Continue trading your system.
• -0.5% to -1.0%: Reduce position sizes by 50%. Tighten stops. You are losing money; the market is not cooperating with your current edge. Lower your risk exposure.
• -1.0% to -1.5%: Critical Alert. Stop opening new positions. Manage existing open trades only. Close all positions by 2:00 PM if possible to lock in the remaining buffer. You are one bad trade away from failure.
• -1.5% to -2.0%: Do not trade. If you are at -1.5%, you have $50 left (on a $10k account). One small tick against a standard lot could end your evaluation. Accept the loss for the day. If you have a daily reset, take the day off. If you do not, you must defend the account with zero risk.

Practical Application: A Sample Trade Log

Let’s walk through a hypothetical day trading Iron Ore (I) on a $10,000 account. Max daily loss: $200.

In this scenario, the trader took a hit, adjusted size, and recovered. Had they doubled down on the second trade to "make back" the loss quickly, the 2% limit would likely have been breached on the chop.

Conclusion: Discipline is the Only Edge

Trading China futures with a 2% daily loss limit is not about predicting the market. It is about managing your exposure to it. The contracts like Rebar and Iron Ore offer incredible liquidity and volatility, which is a gift to the prepared trader and a death sentence to the undisciplined one. Your edge is not in your indicator; it is in your position sizing formula and your willingness to stop trading when you hit your internal circuit breakers.

Start small. Verify your calculations. Respect the tick value. If you are ready to test your system against real market data without risking your personal capital, you can evaluate your strategy on a China futures account at XS Select, starting from $29. This allows you to practice the discipline of the 2% limit in a controlled environment before scaling up. Good luck, and keep your stops tight.