Photo taken on Feb. 2, 2018 shows commemorative coins for the Year of the Dog in Wuxi City, east China's Jiangsu Province. The People's Bank of China issued commemorative 10-yuan coins on Friday. (Xinhua/Huan Yueliang)

Photo taken on Feb. 2, 2018 shows a commemorative coin for the Year of the Dog in Hai'an County, east China's Jiangsu Province. The People's Bank of China issued commemorative 10-yuan coins on Friday. (Xinhua/Xu Jinbai)

Photo taken on Feb. 2, 2018 shows a roll of sealed commemorative coins for the Year of the Dog in Shanghai, east China. The People's Bank of China issued commemorative 10-yuan coins on Friday. (Xinhua/Zhang Bo)

A bank clerk displays commemorative coins for the Year of the Dog in Beijing, capital of China, Feb.2, 2018. The People's Bank of China issued commemorative 10-yuan coins on Friday. (Xinhua/Zhang Yuwei)

Photo taken on Feb. 2, 2018 shows commemorative coins for the Year of the Dog in Beijing, capital of China. The People's Bank of China issued commemorative 10-yuan coins on Friday. (Xinhua/Zhang Yuwei)

A customer shows newly exchanged rolls of commemorative coins for the Year of the Dog in Beijing, capital of China, Feb.2, 2018. The People's Bank of China issued commemorative 10-yuan coins on Friday. (Xinhua/Zhang Yuwei)