Buses bound for Hong Kong are seen in Shenzhen Bay Port, south China, June 13, 2017. This year marks the 20th anniversary of Hong Kong's return to the motherland. (Xinhua/Wang Xi)
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Buses bound for Hong Kong are seen in Shenzhen Bay Port, south China, June 13, 2017. This year marks the 20th anniversary of Hong Kong's return to the motherland. (Xinhua/Wang Xi)
