The collection handed down from ancient times can be directly equipped to every military commander like a famous colt, which is equivalent to an upgraded version of a famous colt. Handed down collections may not have the additional effect of blessing unity and courage, but have the effect of adding attributes, and the effect will not be opened until it is upgraded to a certain stage.
When the player's account role reaches 180 and the four technologies are full, you can start the handed down collection technology, thus improving your game experience and strength.