1. A bulk order refers to an order with a large single transaction volume, and the turnover refers to the total transaction amount within a certain period of time, that is, the total transaction amount between the buyer and the seller within that period of time.

2. The net amount of large orders refers to the difference between the buying amount of all large orders and the selling amount of large orders in a certain period of time. Turnover is the sum of all transactions in the market, reflecting the overall trading activity and capital flow of the market.