Some terms about futures are more troublesome for experts to answer: multi-open, multi-flat, empty-open, empty-flat, double-open, double-flat, multi-open, empty-open and changing hands.

Open more: open a new position.

Multi-flat: multi-head flat old warehouse

Open short: short positions open new positions.

Empty apartment: a low, flat old warehouse

Double opening: Long positions and short positions open new positions at the same time.

Double leveling: Long short positions level old positions at the same time.

Multi-modification: multiple bits open new bits, and the new bits correspond to multiple levels.

Empty warehouse exchange: an empty warehouse opens a new warehouse, and the new warehouse corresponds to the empty warehouse.