Zitong Financial APP learned that in April and June, the Shenzhen Stock Exchange issued a regulatory letter to Nanjing Red Sun Co., Ltd. (* ST Red Sun, 000525.SZ). The supervision letter points out that from 2016 to 2018, the accounting of part of the stock price reduction preparation of the company is not accurate, and there is a false increase in some sales in 2014 and 2018. The above matters affect the accounting of operating income, asset impairment loss, accounts receivable and other subjects, resulting in misstatement of operating income, net profit or net assets in your company's annual report from 2014 to 2020. The above actions violate the relevant regulations of the Shenzhen Stock Exchange.