On January 30, the first management department of listed companies of Shenzhen Stock Exchange issued a concern letter to Jinzhou Cihang Group Co.Ltd(000587) , requiring the company to explain the reason and rationality of operating income mainly concentrated in the third and fourth quarters, whether it conforms to the characteristics of the industry, and whether the company increases business by surprise Increase the income scale in 2021 by means of transactions without commercial substance, so as to avoid the implementation of delisting risk warning. At the same time, the company is required to check whether the company has deducted the income irrelevant to the main business or without commercial substance in accordance with the relevant requirements on the deduction of operating income in the guidelines for self discipline supervision of listed companies No. 1 – business handling.