Tactics #1: Chinese regulation trick
You will receive a message from a random person stating he is from China and he has close to 1 BTC into his wallet but is unable to withdraw it due to some restrictions in their country and share a fake exchange link asking you to register there and he will transfer the amount to you and then you can transfer it to his another wallet wherein he will pay 20% of the amount as a gesture, sounds good isn't it?
Random messages are mostly from scammers. And if they send you random messages just to ask for personal information or give you offers that are too good to be true, they are definitely scammers.
You don't have to care of where are they from, China or not, it is not a matter.
Tactics #2: Investment plans through telegram
they will ask you to buy a plan and state you will 200% of return on your investment withiin 3 days or a week.
Again, stay away from offers that are too good to be true.
Tactics #3: Impersonating a crypto influencer of Youtube(Especially crypto analysts)
It is similar scam approach when scammers try to impersonate famous people. Again, the protective key is avoid offers that are too good to be true.
Crypto transactions are irreversible so scammers will abuse it, ask you to send your crypto first. Then, it will go forever.
You don't know who they are, and crypto transactions are irreversible. Remember that.