What is cold food
Cold food: The name of the festival, one or two days before the Qingming Festival. According to legend, the state of Jin Jie Zitui recluse in the mountains, Jin Wen Gong used the method of burning the mountains to force him to come out as an official, Jie Zitui could not be burned to death. In order to commemorate Jie Yitui, Duke Wen of Jin forbade fire on the day of his death and only ate cold food. Hence the section.
Tang Han ÁŠ "Cold food" : "Spring city everywhere flying flowers, cold food Dongfeng Yu willow oblique."