The method of making clocks and casting ding is the same as classical Chinese translation.

The method of making a clock and casting a tripod is the same as that of classical Chinese translation: the method of making a clock and casting a tripod is the same.

Wu Kai of Tiangong introduced as follows:

Wu Kai in the Heavenly Palace was first published in 1637 by Song, a famous scientist in Ming Dynasty (Ding Chou in the tenth year of Chongzhen in Ming Dynasty), with three volumes and eighteen articles. The book contains the production techniques of agriculture and handicrafts, such as machinery, bricks, ceramics, sulfur, candles, paper, weapons, gunpowder, textiles, printing and dyeing, salt making, coal mining and oil extraction.

Heavenly Creations is the first comprehensive work on agriculture and handicraft production in the world. It is a comprehensive scientific and technological work in ancient China. Others call it an encyclopedic work. The writer is Song, a scientist in Ming Dynasty. Foreign scholars call it "China17th century craft encyclopedia".

Song (1587-? ), a famous scientist in Ming Dynasty. Chang Geng was born in Waxi archway in Fengxin County, Jiangxi Province (now the production team of Songbu Commune in Fengxin County). Juren was born. In the seventh year of Chongzhen in the Ming Dynasty (1634), he was appointed as an official in Jiangxi. Later, he worked as an official in Tingzhou, Fujian, and as a magistrate in Bozhou, South Zhili.

Song devoted all his life to the scientific investigation and research of agriculture and handicraft production, and collected a wealth of scientific data. At the same time, his advanced consciousness made him a thinker who criticized feudalism and medieval academic tradition.

Song's works and research fields involve different disciplines of natural science and humanities, among which the most outstanding work "Heavenly Creations" is known as "17th century China's craft encyclopedia".

In May, 20021,the International Astronomical Union (IAU) approved the naming of the lunar landforms in China near the landing site of Chang 'e V, and Song was one of the eight landforms.

Heavenly Creations emphasizes that people should live in harmony with nature and human resources should cooperate with natural forces. It is the most abundant historical data of science and technology in China. It focuses more on handicrafts and reflects the productive forces of capitalism in China in the late Ming Dynasty. The book contains the production techniques of agriculture and handicrafts, such as machinery, bricks, ceramics, sulfur, candles, paper, weapons, gunpowder, textiles, printing and dyeing, salt making, coal mining and oil extraction.