1. Nunchucks are not controlled devices and it is not illegal to take them out, but it is best not to take them with you. We live in a legal society, so there is no need to carry this thing around every day.
2. Controlled instruments refer to daggers, triangular knives (including triangular scrapers for machining), spring knives with self-locking devices (jumping knives) and other similar single-edged and double-edged , triangular sharp knife.