天开
1. It means that heaven develops and enlightens. "Historical Records of the Wei Family": "This is how we begin to reward, and the sky is opened." "Wang Zhongxuan" by Cao Zhi of the Three Kingdoms Wei Dynasty: "The sky is opened, and at the end Zhou is crowned king."
2. Refer to the sun. Traveling north and returning, Yang Qi will be revived. Zhang Juzheng of the Ming Dynasty, "Congratulations on the Winter Solstice Table 1": "The jade rules welcome the sun, bringing good luck to all the world."
Shu Jing
1. Beautiful time. 2. Beautiful scenery. 3. Refers to spring.
Tiankai Shujing means the beautiful scenery given by God.