The wheelwright adheres to his rules to measure the circumference of the world - "Mozi - The Annals of Heaven"
A square piece of wood can be sawed and carved with ingenuity; a ruler and an inch of earth can be used to build a miraculous building.
Invention and creation create sparks of wisdom, and craftsmen's ingenuity is passed down for thousands of years, achieving human civilization and development.
In ancient times, there was Luban, the saint of hundreds of craftsmen, and today there is Jiang Changan, the king of hundred certificates. One hundred qualification certificates in engineering fields such as civil construction, water conservancy construction, machinery, geology and mining, etc.
Others traveled through time with a space system, but Jiang Changan was reborn with a certificate.
The ancient Song Dynasty, which had backward technology and low productivity, was her home turf.
Transform farm tools to improve farmers' farming efficiency; make small inventions to improve a family's living standards; but if you want to make a fortune, you have to take the imperial examination to pave the way.
One hundred certificates are enough to carry out infrastructure construction in this backward ancient times, so that the top position in the construction industry, the Minister of the Ministry of Industry, can be easily obtained, until the Ministry of Industry is rolled into the first of six departments.
Only in this way can we repay our loving grandfather, enlightened parents, and wise teachers...
Li Shushen, the son of a true princess and a crazy master: My childhood sweetheart, you seem to have forgotten that you still have me! Zhuma's life-saving grace should be pledged with his own body. The title of Mrs. Chief Assistant is worthy of you.
Jiang Chang'an: It's feasible. The road is long and long. We are in the same boat through thick and thin, share weal and woe, and use rules to measure the radius of this family, this court, and this world. We will grow old happily and have children and grandchildren.