Bitcoin / US Dollar Perpetual Inverse Swap ContractBitMEX
คำอธิบาย
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Generate a small line according to the pattern of the K-line, where green represents long and red represents short; （we call it pen） then according to the small line segment, a large line(we call it line) is generated according to the new high or new low rule; (we call it line) finally, a rectangle is generated according to the overlap interval of the large line.(we call it zhongshu)