China Technical Analysis

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Compute and analyze technical indicators (MACD, KDJ, RSI, Moving Averages, Bollinger Bands) for Chinese futures markets. Generate buy/sell signals and chart descriptions based on data from china-commodity-quotes.

Install

openclaw skills install china-technical-analysis

China Technical Analysis — 中国期货技术分析

Compute technical indicators and generate trading signals for Chinese commodity futures, financial index futures, crude oil, and shipping index markets.

Use this skill when:

User asks for MACD, KDJ, RSI, 金叉死叉, or any technical indicator analysis
User wants buy/sell signals for a specific futures contract
User asks to "看下XX的走势" or "分析一下XX的技术面"
User wants to know if a contract is overbought/oversold
User wants channel, support/resistance levels

Quick Start

Recommended Flow

Fetch quote data → Use china-commodity-quotes to get price data for the target contract
Calculate indicators → Use formulas below to compute MACD, MA, RSI, Bollinger Bands, KDJ
Generate signal → Combine indicators and output buy/sell/neutral recommendation
Present result → Format with clear buy/sell signals and chart description

Data Sources

Through china-commodity-quotes, you can get:

open, high, low, close (daily or intraday)
volume and open_interest
Historical bar data via Sina Finance API

For multi-day historical data (best for indicators):

https://stock2.finance.sina.com.cn/futures/api/jsonp.php/var%20_=new%20Date().getTime()/InnerFuturesNewService.getDailyKLine?symbol=<CONTRACT_CODE>&datalen=<DAYS>

Example (curl):

curl -s "https://stock2.finance.sina.com.cn/futures/api/jsonp.php/InnerFuturesNewService.getDailyKLine?symbol=IF0&datalen=60"

For minute-level data:

https://stock2.finance.sina.com.cn/futures/api/jsonp.php/InnerFuturesNewService.getMinLine?symbol=<CONTRACT_CODE>&type=<M1|M5|M15|M30|M60>

Technical Indicator Formulas

1. Moving Averages (MA — 均线系统)

Simple Moving Average (SMA):

SMA(n) = (C1 + C2 + ... + Cn) / n

Where C = closing price, n = period

Common periods for Chinese futures:

MA5 (5-day) — short-term trend
MA10 (10-day) — short-term support/resistance
MA20 (MA20) — mid-term trend
MA60 (60-day) — long-term trend
MA120 (120-day) — major trend line

Golden Cross (金叉) — Buy Signal: Short-term MA crosses ABOVE long-term MA (e.g., MA5 上穿 MA20)

Death Cross (死叉) — Sell Signal: Short-term MA crosses BELOW long-term MA (e.g., MA5 下穿 MA20)

2. MACD (指数平滑异同移动平均线)

Step-by-step calculation:

Step 1: EMA12 = EMA(C, 12)    — Fast EMA
Step 2: EMA26 = EMA(C, 26)    — Slow EMA
Step 3: DIF = EMA12 - EMA26    — Difference
Step 4: DEA = EMA(DIF, 9)      — Signal line (9-day EMA of DIF)
Step 5: MACD bar = 2 × (DIF - DEA)   — Histogram

EMA calculation (recursive):

EMA(today) = (C × K) + (EMA(yesterday) × (1 - K))
Where K = 2 / (N + 1)

Signals:

Signal	Condition	Interpretation
Golden cross	DIF crosses above DEA	Bullish 🟢
Death cross	DIF crosses below DEA	Bearish 🔴
Zero crossing (up)	DIF crosses above 0	Trend turning bullish
Zero crossing (down)	DIF crosses below 0	Trend turning bearish
Divergence (bullish)	Price lower low, MACD higher low	Reversal up ⬆️
Divergence (bearish)	Price higher high, MACD lower high	Reversal down ⬇️

3. RSI (相对强弱指标)

RSI(n) = 100 - [100 / (1 + RS)]
RS = AvgGain(n) / AvgLoss(n)

Where:

AvgGain(n) = average of up-moves over n periods
AvgLoss(n) = average of down-moves over n periods
Default period: n = 14

Interpretation:

RSI Range	Signal
> 80	Overbought (超买) — potential sell ⚠️
70 - 80	Strongly bullish, nearing overbought
30 - 70	Normal range
20 - 30	Strongly bearish, nearing oversold
< 20	Oversold (超卖) — potential buy ⚠️

4. Bollinger Bands (布林带)

Middle Band = SMA(n)
Upper Band  = Middle Band + (k × StdDev(n))
Lower Band  = Middle Band - (k × StdDev(n))

Where:

n = 20 (default period)
k = 2 (default multiplier)
StdDev = standard deviation of closing prices

Interpretation:

Pattern	Meaning
Price touches upper band	Overbought; potential resistance
Price touches lower band	Oversold; potential support
Price breaks above upper band	Strong momentum; trend continuation
Price breaks below lower band	Strong momentum; trend continuation
Bands squeeze (narrowing)	Low volatility; impending breakout
Bands expand (widening)	High volatility

5. KDJ (随机指标 — Chinese Traders' Favorite)

KDJ is a derivative of the Stochastic Oscillator, widely used by Chinese futures traders.

Step 1: RSV = (C - L9) / (H9 - L9) × 100
   Where C = today's close, L9 = lowest low of 9 periods, H9 = highest high of 9 periods

Step 2: K = (2/3 × K(yesterday)) + (1/3 × RSV)
Step 3: D = (2/3 × D(yesterday)) + (1/3 × K(today))
Step 4: J = (3 × K) - (2 × D)

Interpretation:

Value	Meaning
K > D	Uptrend
K < D	Downtrend
K/D/J > 80	Overbought
K/D/J < 20	Oversold
Golden cross (K ↑ D)	Buy signal (especially < 20)
Death cross (K ↓ D)	Sell signal (especially > 80)
J > 100	Top warning 🔴
J < 0	Bottom warning 🟢

Signal Generation Logic

Composite Signal Scoring

Assign weights to get a combined signal:

Indicator	Buy Signal	Sell Signal	Weight
MACD	DIF ↑ DEA, DIF > 0	DIF ↓ DEA, DIF < 0	30%
RSI	RSI < 30 → oversold	RSI > 70 → overbought	20%
MA	Price > MA5 > MA10 > MA20	Price < MA5 < MA10 < MA20	25%
Bollinger	Price at/below lower band	Price at/above upper band	10%
KDJ	K ↑ D < 20	K ↓ D > 80	15%

Overall:

Score ≥ 60 → Buy 🟢
Score ≤ -60 → Sell 🔴
Otherwise → Neutral ⚪

Support & Resistance

Support levels (支撑位):

Previous lows
MA20, MA60
Lower Bollinger Band
Fibonacci retracement levels (0.382, 0.5, 0.618)

Resistance levels (压力位):

Previous highs
MA20 (acting as resistance in downtrend)
Upper Bollinger Band
Fibonacci retracement levels

Scripts

`scripts/indicators.py`

Core technical indicator calculation engine:

sma(data, period) — Simple Moving Average
ema(data, period) — Exponential Moving Average
macd(data) — MACD (DIF, DEA, histogram)
rsi(data, period=14) — RSI
bollinger(data, period=20, k=2) — Bollinger Bands
kdj(data) — KDJ indicator
golden_death_cross(short_ma, long_ma) — Detect 金叉/死叉
composite_signal(data) — Combine all indicators → final signal

Example Output

📉 沪深300 (IF2606) 技术分析

📊 均线系统
  MA5:  3850.2  |  MA10: 3820.5  |  MA20: 3790.8
  ⚡ 金叉确认: MA5 上穿 MA10 ✅

📊 MACD (12,26,9)
  DIF: +8.50  |  DEA: +5.20  |  柱: +6.60
  🟢 MACD金叉，DIF在零轴上方

📊 RSI(14): 62.5
  ⚪ 正常区间，偏强

📊 布林带 (20,2)
  上轨: 3920.0  |  中轨: 3790.8  |  下轨: 3661.6
  价格接近中轨，布林带略微扩张

📊 KDJ(9,3,3)
  K: 68.2  |  D: 62.5  |  J: 79.6
  ⚠️ J值接近80，注意超买风险

━━━━━━━━━━━━━━━━━━━━━
🟢 BUY 信号 (评分: +65/100)
  主要支撑: 3790 (MA20)
  主要压力: 3850 (前高) / 3920 (布林上轨)

💡 建议: 短线偏多，注意J值高位回调风险
  止损参考: 3780 (-0.5%)

Important Notes

Technical analysis provides probability-based signals, not guarantees
Always combine with fundamentals and market news
Chinese futures markets have unique characteristics (夜盘, limit up/down rules)
KDJ is particularly popular among Chinese retail traders; MACD + MA combo is preferred by institutions
The script scripts/indicators.py can be called directly for batch analysis