Important Notices 2022年4月1日 CHSSL's Services from April 1st, 2022 (Update May 31) News More SystemSeptember 11, 2023From 10:00 a.m. on Sep. 14, Our website will be downSystemJune 19, 2023From 13:00 p.m. on June 20, Our website will be downSystemMay 25, 2023From 15:00 p.m. on May 29, Request form will be downNewsMarch 31, 2023The Bulletin No. 43 is availableSystemDecember 9, 2022From 18:00 p.m. on Dec. 12, Our website will be downCloseNovember 24, 2022The CHSSL will be closed on Dec. 14-16.NewsOctober 7, 2022Study Series No. 80 is available