A chef shows a new kind of vegetarian set meal of high-speed trains at a food production base in Beijing, capital of China, Feb. 7, 2018. Altogether 18 kinds of set meals at 6 price levels are available on China's high-speed trains during the Spring Festival travel rush which is from Feb. 1 to March 12. (Xinhua/Shen Bohan)
Workers clean baskets used to carry set meals of high-speed trains at a food production base in Beijing, capital of China, Feb. 7, 2018. Altogether 18 kinds of set meals at 6 price levels are available on China's high-speed trains during the Spring Festival travel rush which is from Feb. 1 to March 12. (Xinhua/Shen Bohan)
Workers transfer set meals of high-speed trains at a food production base in Beijing, capital of China, Feb. 2, 2018. Altogether 18 kinds of set meals at 6 price levels are available on China's high-speed trains during the Spring Festival travel rush which is from Feb. 1 to March 12. (Xinhua/Shen Bohan)
Workers prepare food for high-speed trains at a food production base in Beijing, capital of China, Feb. 7, 2018. Altogether 18 kinds of set meals at 6 price levels are available on China's high-speed trains during the Spring Festival travel rush which is from Feb. 1 to March 12. (Xinhua/Shen Bohan)
Workers prepare food for high-speed trains at a food production base in Beijing, capital of China, Feb. 7, 2018. Altogether 18 kinds of set meals at 6 price levels are available on China's high-speed trains during the Spring Festival travel rush which is from Feb. 1 to March 12. (Xinhua/Shen Bohan)
Workers make steamed buns in the preparation of set meals for high-speed trains at a food production base in Beijing, capital of China, Feb. 7, 2018. Altogether 18 kinds of set meals at 6 price levels are available on China's high-speed trains during the Spring Festival travel rush which is from Feb. 1 to March 12. (Xinhua/Shen Bohan)
Workers deal with vegetables for set meals on high-speed trains at a food production base in Beijing, capital of China, Feb. 7, 2018. Altogether 18 kinds of set meals at 6 price levels are available on China's high-speed trains during the Spring Festival travel rush which is from Feb. 1 to March 12. (Xinhua/Shen Bohan)
Workers deal with vegetables for set meals on high-speed trains at a food production base in Beijing, capital of China, Feb. 7, 2018. Altogether 18 kinds of set meals at 6 price levels are available on China's high-speed trains during the Spring Festival travel rush which is from Feb. 1 to March 12. (Xinhua/Shen Bohan)