Let’s talk about token lock-ups.
Once the lock-up period ends, the assets become freely transferable again.
To be honest, I hadn’t paid attention to this before either: when you hear “the team’s tokens are locked up,” check the lock-up contract and unlock time on a block explorer—don’t just take someone’s word for it.
$BNB Subscribing to a fixed-term product may also be described as “locking up” your assets. Currently 740.92.
When you hear claims of high returns, be skeptical.

These points could also be wrong, so don’t follow them blindly.