The summer rains of June and July 1925 badly affected Happy Valley. See here for June. The Hong Kong Sanatorium (formerly the Happy Retreat) can be seen above the junction of Wong Nei Chong and Shan Kwong Roads.
China Mail 17 July 1925
The Happy Retreat corner of Wongneichong has suffered somewhat severely again through more debris being carried down from the gap above. Happy Valley needless to say, is like a sea, the drains being unable to cope with the terrific volume of water that has poured down from the hillsides.