A whole day would be necessary to conform to the Taiwanese system, but Malaysian primary schools only have half-days of classes--the reason given is that the weather is too hot, limiting learning efficiency.
既然要比照國內學制，孩子們當然應該上全天班，但當地小學卻只上半天課，理由是下午天氣太熱、學習效果不佳，乾脆自由活動。