People visit the products presented during the exhibitions at Hong Kong Convention and Exhibition Centre, Wan Chai, Hong Kong Special Administrative Region, August 12, 2021. (Photo: Ecns.cn)

People visit the products presented during the exhibitions at Hong Kong Convention and Exhibition Centre, Wan Chai, Hong Kong Special Administrative Region, August 12, 2021. (Photo: Ecns.cn)

People visit the products presented during the exhibitions at Hong Kong Convention and Exhibition Centre, Wan Chai, Hong Kong Special Administrative Region, August 12, 2021. (Photo: Ecns.cn)

Snacks are presented at an exhibition held at Hong Kong Convention and Exhibition Centre, Wan Chai, Hong Kong Special Administrative Region, August 12, 2021. (Photo: Ecns.cn)