Cosco received a letter of concern from Shenzhen Stock Exchange. It is required to specify whether the company has related business and products of "building intelligent big data information processing, AI visualization, metacosmos application, intelligent construction system, block chain and other technologies". If so, please further explain the main customers, related income and profits, R & D and resource investment in the past three years, as well as the specific impact on the company. If it does not exist, please explain the resources and advantages, relevance and necessity of the relevant business, and the role played by the company in the strategic cooperation agreement, in combination with the company's main business, technical research and development capabilities, personnel composition, production capacity, etc., verify and explain whether there is a hot spot to speculate the stock price.