Photo taken on March 30, 2018 shows exhibition zone for exhibitors from northwest China's Shaanxi Province during a Silk Road international tourism expo in Xi'an. Exhibitors from 35 countries and regions participated in the expo that kicked off here on Friday. (Xinhua/Shao Rui)

Performers dance during a Silk Road international tourism expo in Xi'an, northwest China's Shaanxi Province, March 30, 2018. Exhibitors from 35 countries and regions participated in the expo that kicked off here on Friday. (Xinhua/Shao Rui)

People buy special local products during a Silk Road international tourism expo in Xi'an, northwest China's Shaanxi Province, March 30, 2018. Exhibitors from 35 countries and regions participated in the expo that kicked off here on Friday. (Xinhua/Shao Rui)

Performers dance during a Silk Road international tourism expo in Xi'an, northwest China's Shaanxi Province, March 30, 2018. Exhibitors from 35 countries and regions participated in the expo that kicked off here on Friday. (Xinhua/Shao Rui)

A visitor from Denmark looks at embroidery product during a Silk Road international tourism expo in Xi'an, northwest China's Shaanxi Province, March 30, 2018. Exhibitors from 35 countries and regions participated in the expo that kicked off here on Friday. (Xinhua/Tao Ming)

Actresses perform dance during a Silk Road international tourism expo in Xi'an, northwest China's Shaanxi Province, March 30, 2018. Exhibitors from 35 countries and regions participated in the expo that kicked off here on Friday. (Xinhua/Tao Ming)

Foreign tourists pose for a photo with mascot during a Silk Road international tourism expo in Xi'an, northwest China's Shaanxi Province, March 30, 2018. Exhibitors from 35 countries and regions participated in the expo that kicked off here on Friday. (Xinhua/Tao Ming)

An exhibitor introduces Ansai waist drum to foreign visitors during a Silk Road international tourism expo in Xi'an, northwest China's Shaanxi Province, March 30, 2018. Exhibitors from 35 countries and regions participated in the expo that kicked off here on Friday. (Xinhua/Tao Ming)

Exhibitors perform tea art during a Silk Road international tourism expo in Xi'an, northwest China's Shaanxi Province, March 30, 2018. Exhibitors from 35 countries and regions participated in the expo that kicked off here on Friday. (Xinhua/Tao Ming)

People view handicrafts during a Silk Road international tourism expo in Xi'an, northwest China's Shaanxi Province, March 30, 2018. Exhibitors from 35 countries and regions participated in the expo that kicked off here on Friday. (Xinhua/Tao Ming)