Wengyou Middle School of Tianshui Wai, Hong Kong, Wednesday (February 8th) ushered in cross -border students who returned to school in the morning.Hong Kong and Mainland China resumed customs clearance on February 6. Shenzhen -Hong Kong cross -border middle school students started to return to Hong Kong on Wednesday. Cross -border primary school students and kindergarten students will begin to return to Hong Kong on February 22.(China News Agency)