李樹堅課程導師於12/10/2018在香港奧運大樓課室授課，33位來自香港拯溺總會的泳池管理準教練正在上泳池水質處理機房操作證書課程。

Mr Patrick Lee Course Director conducting the Swimming Pool Care and Maintenance certificate course at the Hong Kong Olympic Stadium to a group of 33 candidates from the Hong Kong Life Saving   Society, who would be qualified as Swimming Pool Management Instructor.