FY-4A satellite has entered the operation phase surpassing its design lifespan. To ensure the scientific use of the instruments onboard, the imagers on FY-4A will be temporarily suspended between 0:30-4:30 (CST) from January 23, 2024 to May 23, 2024. During this period, the scanning mechanism will be directed towards the black body position, while resume normal observations at other times.