Why didn't China Merchants Securities have a reverse page on Saturday and Sunday?

Because China Merchants Securities needs system maintenance and update on Saturday and Sunday.

In order to eliminate faults and errors in system operation, software and hardware maintenance personnel should make necessary modifications and improvements to the system; In order to make the system adapt to the changes of users' environment and meet new requirements, some local updates are needed to the original system, which is called system maintenance. The task of system maintenance is to correct the hidden errors found in the use of the software system and expand the new functions and performance requirements put forward by users in the process of use, with the aim of maintaining the "normal operation" of the software system. The documents in this stage are software problem report and software modification report, which record the situation of finding software errors and the process of modifying software.

Management information system (MIS) has entered the stage of system operation and maintenance after being implemented and put into normal operation. Generally, the service life of an information system is as short as 4-5 years and as long as 10 years. In the whole service life of an information system, it will be accompanied by system maintenance. The purpose of system maintenance is to ensure the normal and reliable operation of management information system, and constantly improve and perfect the system to give full play to its role. Therefore, the task of system maintenance is to make necessary changes to the system in a planned and organized way, so as to ensure that all elements in the system are always in the latest and correct working state with the changes of the environment.