No, according to the trading rules of Zhengzhou Commodity Exchange, we can see that the warehouse receipt of Zhengzhou Futures Exchange can't just look at the day. Zhengzhou, referred to as "Zheng" for short, was called "heaven and earth" in history and called Shangdu in ancient times. Now called Greentown, it is a prefecture-level city, provincial capital and megacity under the jurisdiction of Henan Province.