Visitors pose for a photo at a love theme exhibition at Haier World Home Appliance Museum on Qixi festival, or Chinese Valentine's Day, in Qingdao, east China's Shandong Province, on Aug. 7, 2019. (Xinhua/Li Ziheng)

A woman visits a love theme exhibition at Haier World Home Appliance Museum on Qixi festival, or Chinese Valentine's Day, in Qingdao, east China's Shandong Province, on Aug. 7, 2019. (Xinhua/Li Ziheng)

People visit a love theme exhibition at Haier World Home Appliance Museum on Qixi festival, or Chinese Valentine's Day, in Qingdao, east China's Shandong Province, on Aug. 7, 2019. (Xinhua/Li Ziheng)

A visitor poses for a photo at a love theme exhibition at Haier World Home Appliance Museum on Qixi festival, or Chinese Valentine's Day, in Qingdao, east China's Shandong Province, on Aug. 7, 2019. (Xinhua/Li Ziheng)

A woman visits a "love train" at a love theme exhibition at Haier World Home Appliance Museum on Qixi festival, or Chinese Valentine's Day, in Qingdao, east China's Shandong Province, on Aug. 7, 2019. (Xinhua/Li Ziheng)