What are the advantages of manual technology compared with modern mechanization?

Technology can be adapted to a wide range of places, and modern machinery must be in the machining workshop;

Manual technology can change the processing method according to the special internal changes of a single workpiece material, but modern machinery can't;

Manual technology can carry out some special treatment and processing according to the site environment, but modern machinery can't;

Artificial technology can dynamically change according to the environment, weather, temperature and other factors to achieve the best use of equipment, but modern machinery can not.