Chi bao zigzag, minh khong ranh lam ban.
Ve nen hammer va bollinger bands.
- ban su dung High, low, open, close, barsize, atr de code nha.
- bollinger bands: minh lay truong hop nen tai dinh,ban so sanh gia tri Close hoac High cua nen va Upper bands tuong doi voi khoang cach Upper bands va...