Change more = change hands more. If I have bought the goods in my hand and want to sell them now, I will hang up the bill. If others take the initiative to buy, it is called changeability. The reason for being empty is the same.

Multi-turn = multi-turn, or I have bought something in my hand and want to sell it now, and you take the initiative to sell it (you make a deal at a real-time price). This is called multi-turn. So is idling.

If you have any other questions, please leave me a message.