Thanks, I tested
1. There is indeed no maximum value, but it will "decrease", and it will become negligible after a certain size.
2. The camera system can really help lock items.
3. There is indeed no method of "inheritance of the subject of investigation", you can only look at your own.
4. There are a lot of unreasonable problems in the game, stuck pillars, vacant terrain and setting problems. I don’t know if the author will update it.