A student of Yan Chai Hospital Wong Wah San Secondary School uses hand sanitizer as he enters the school building as Hong Kong schools resume staggered resumption of on-site classes. In Tseung Kwan O, Hong Kong on Sept 23, 2020. (CALVIN NG/ CHINA DAILY)

In Hong Kong, students of first, fifth and sixth grades of secondary and primary schools as well as those of the kindergarten K3 grade resumed on-site classes on Wednesday. 

The remaining students, including those in lower kindergarten grades, will resume classes on Sept 29.

Students of Yan Chai Hospital Wong Wah San Secondary School undergo temperature checks before entering classrooms, in Tseung Kwan O, Hong Kong, Sept 23 2020. (CALVIN NG / CHINA DAILY)

A student of Christian and Missionary Alliance Sun Kei Secondary School spreads cheer on his first day back in school after a long gap. In Tseung Kwan O, Hong Kong, on Sept 23, 2020. (CALVIN NG / CHINA DAILY)

Students steer the morning rush as on-site classes resume in batches in Hong Kong. In Tseung Kwan O, Hong Kong, on Sept 23, 2020. (CALVIN NG / CHINA DAILY)

Students of Christian and Missionary Alliance Sun Kei Secondary School welcome their classmates back to campus. (CALVIN NG / CHINA DAILY)

Two students are seen walking at Yan Chai Hospital Wong Wah San Secondary School, in Tseung Kwan O, Hong Kong, Sept 23, 2020. (CALVIN NG / CHINA DAILY)