Photo taken on Aug. 4, 2018 shows trucks from Kazakhstan parking at a foreign trade company in Horgos, northwest China's Xinjiang Uygur Autonomous Region, Aug. 4, 2018. The trade at the China-Kazakhstan Horgos International Border Cooperation Center enters a busy season since the beginning of the summer tourism peak. (Xinhua/Li Mengjiao)

A trader from Kazakhstan carries cargo in Horgos, northwest China's Xinjiang Uygur Autonomous Region, Aug. 4, 2018. The trade at the China-Kazakhstan Horgos International Border Cooperation Center enters a busy season since the beginning of the summer tourism peak. (Xinhua/Li Mengjiao)

A trader from Kazakhstan purchases bedclothes at the China-Kazakhstan Horgos International Border Cooperation Center in Horgos, northwest China's Xinjiang Uygur Autonomous Region, Aug. 4, 2018. The trade at the China-Kazakhstan Horgos International Border Cooperation Center enters a busy season since the beginning of the summer tourism peak. (Xinhua/Hu Huhu)

A driver from Kazakhstan (R) communicates with a Chinese translator in Horgos, northwest China's Xinjiang Uygur Autonomous Region, Aug. 4, 2018. The trade at the China-Kazakhstan Horgos International Border Cooperation Center enters a busy season since the beginning of the summer tourism peak. (Xinhua/Huang Zhen)

Traders from Kazakhstan pack cargo at the China-Kazakhstan Horgos International Border Cooperation Center in Horgos, northwest China's Xinjiang Uygur Autonomous Region, Aug. 4, 2018. The trade at the China-Kazakhstan Horgos International Border Cooperation Center enters a busy season since the beginning of the summer tourism peak. (Xinhua/Hu Huhu)