What cold knowledge does the film and television industry have?

The script font size of a professional screenwriter must be small four, and the line spacing must be 1.5 times; If the shooting time exceeds 12 days, family, love and friendship often occur in the crew; Sticking the "lollipop" on the Tian Ji means sticking the tail of the water-based pen with a cloth, which is convenient for wiping and saves time; Lighting engineers are mostly from Henan and spread like a family. It is best not to fight with lighting engineers in the group. In addition, each lighting group will have a person named "Saner"; General photographers can't use cameras except for simple operations such as switches, but "waiters" are most familiar with various camera settings; Later, everyone in the early stage was scolded again; As for some unexpected things, such as Bellevue, plastic wrap and apple box, I thought of it for the time being. If anything goes wrong, I can blame it on the production team.