Photo taken on April 21, 2016 shows jars used to make bean paste at a company producing Pixian bean paste in Pixian County, southwest China's Sichuan Province. Pixian bean paste, a condiment with main ingredients including red pepper, broad bean, wheat flour and salt, has a history of more than 300 years. The technique of producing Pixian bean paste has been listed as a national intangible cultural heritage in 2008. (Xinhua/Xue Yubin)

Photo taken on April 21, 2016 shows a worker stirring bean paste at a company producing Pixian bean paste in Pixian County, southwest China's Sichuan Province. Pixian bean paste, a condiment with main ingredients including red pepper, broad bean, wheat flour and salt, has a history of more than 300 years. The technique of producing Pixian bean paste has been listed as a national intangible cultural heritage in 2008. (Xinhua/Xue Yubin)

Photo taken on April 21, 2016 shows jars used to make bean paste at a company producing Pixian bean paste in Pixian County, southwest China's Sichuan Province. Pixian bean paste, a condiment with main ingredients including red pepper, broad bean, wheat flour and salt, has a history of more than 300 years. The technique of producing Pixian bean paste has been listed as a national intangible cultural heritage in 2008. (Xinhua/Xue Yubin)

Photo taken on April 21, 2016 shows a worker operating a machine to stir bean paste at a company producing Pixian bean paste in Pixian County, southwest China's Sichuan Province. Pixian bean paste, a condiment with main ingredients including red pepper, broad bean, wheat flour and salt, has a history of more than 300 years. The technique of producing Pixian bean paste has been listed as a national intangible cultural heritage in 2008. (Xinhua/Xue Yubin)

Photo taken on April 21, 2016 shows a worker operating a machine to stir bean paste at a company producing Pixian bean paste in Pixian County, southwest China's Sichuan Province. Pixian bean paste, a condiment with main ingredients including red pepper, broad bean, wheat flour and salt, has a history of more than 300 years. The technique of producing Pixian bean paste has been listed as a national intangible cultural heritage in 2008. (Xinhua/Xue Yubin)

Photo taken on April 21, 2016 shows bean paste under drying at a company producing Pixian bean paste in Pixian County, southwest China's Sichuan Province. Pixian bean paste, a condiment with main ingredients including red pepper, broad bean, wheat flour and salt, has a history of more than 300 years. The technique of producing Pixian bean paste has been listed as a national intangible cultural heritage in 2008. (Xinhua/Xue Yubin)

Photo taken on April 21, 2016 shows jars used to make bean paste at a company producing Pixian bean paste in Pixian County, southwest China's Sichuan Province. Pixian bean paste, a condiment with main ingredients including red pepper, broad bean, wheat flour and salt, has a history of more than 300 years. The technique of producing Pixian bean paste has been listed as a national intangible cultural heritage in 2008. (Xinhua/Xue Yubin)

Photo taken on April 21, 2016 shows a worker basking fermentative broad beans at a company producing Pixian bean paste in Pixian County, southwest China's Sichuan Province. Pixian bean paste, a condiment with main ingredients including red pepper, broad bean, wheat flour and salt, has a history of more than 300 years. The technique of producing Pixian bean paste has been listed as a national intangible cultural heritage in 2008. (Xinhua/Xue Yubin)

Photo taken on April 21, 2016 shows a worker stirring bean paste at a company producing Pixian bean paste in Pixian County, southwest China's Sichuan Province. Pixian bean paste, a condiment with main ingredients including red pepper, broad bean, wheat flour and salt, has a history of more than 300 years. The technique of producing Pixian bean paste has been listed as a national intangible cultural heritage in 2008. (Xinhua/Xue Yubin)