Tourists buy jerky at the 17th Hong Kong Food Festival in Hong Kong, south China, Dec. 28, 2019. (Xinhua/Wu Xiaochu)

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A child buys candied haws at the 17th Hong Kong Food Festival in Hong Kong, south China, Dec. 28, 2019. (Xinhua/Wu Xiaochu)

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Tourists walk past a poster of the 17th Hong Kong Food Festival in Hong Kong, south China, Dec. 28, 2019. (Xinhua/Wu Xiaochu)