Traders talk business during the 125th China Import and Export Fair in Guangzhou, south China's Guangdong Province, April 15, 2019. The 125th China Import and Export Fair, also known as the Canton Fair, opened Monday in Guangzhou, with over half of companies attending its import fair hailing from Belt and Road countries and regions. (Xinhua/Liang Xu)

People walk in the exhibition hall of the 125th China Import and Export Fair in Guangzhou, south China's Guangdong Province, April 15, 2019. The 125th China Import and Export Fair, also known as the Canton Fair, opened Monday in Guangzhou, with over half of companies attending its import fair hailing from Belt and Road countries and regions. (Xinhua/Liang Xu)

Traders talk business during the 125th China Import and Export Fair in Guangzhou, south China's Guangdong Province, April 15, 2019. The 125th China Import and Export Fair, also known as the Canton Fair, opened Monday in Guangzhou, with over half of companies attending its import fair hailing from Belt and Road countries and regions. (Xinhua/Liang Xu)

People walk in the exhibition hall of the 125th China Import and Export Fair in Guangzhou, south China's Guangdong Province, April 15, 2019. The 125th China Import and Export Fair, also known as the Canton Fair, opened Monday in Guangzhou, with over half of companies attending its import fair hailing from Belt and Road countries and regions. (Xinhua/Liang Xu)

Traders talk business during the 125th China Import and Export Fair in Guangzhou, south China's Guangdong Province, April 15, 2019. The 125th China Import and Export Fair, also known as the Canton Fair, opened Monday in Guangzhou, with over half of companies attending its import fair hailing from Belt and Road countries and regions. (Xinhua/Liang Xu)

Traders talk business during the 125th China Import and Export Fair in Guangzhou, south China's Guangdong Province, April 15, 2019. The 125th China Import and Export Fair, also known as the Canton Fair, opened Monday in Guangzhou, with over half of companies attending its import fair hailing from Belt and Road countries and regions. (Xinhua/Liang Xu)

Robot products are seen during the 125th China Import and Export Fair in Guangzhou, south China's Guangdong Province, April 15, 2019. The 125th China Import and Export Fair, also known as the Canton Fair, opened Monday in Guangzhou, with over half of companies attending its import fair hailing from Belt and Road countries and regions. (Xinhua/Deng Hua)

Traders talk business at the booths of household appliances during the 125th China Import and Export Fair in Guangzhou, south China's Guangdong Province, April 15, 2019. The 125th China Import and Export Fair, also known as the Canton Fair, opened Monday in Guangzhou, with over half of companies attending its import fair hailing from Belt and Road countries and regions. (Xinhua/Liang Xu)

Traders talk business at the booths of household appliances during the 125th China Import and Export Fair in Guangzhou, south China's Guangdong Province, April 15, 2019. The 125th China Import and Export Fair, also known as the Canton Fair, opened Monday in Guangzhou, with over half of companies attending its import fair hailing from Belt and Road countries and regions. (Xinhua/Liang Xu)

Traders talk business at the booths of household appliances during the 125th China Import and Export Fair in Guangzhou, south China's Guangdong Province, April 15, 2019. The 125th China Import and Export Fair, also known as the Canton Fair, opened Monday in Guangzhou, with over half of companies attending its import fair hailing from Belt and Road countries and regions. (Xinhua/Liang Xu)