You're referring to the Red Packet feature on Binance!

Red Packets are virtual envelopes containing cryptocurrency that can be sent to friends or new users via Binance Pay. To get Red Packets or send them, follow these steps [1]:

- *Get Red Packets*: Look out for Red Packet campaigns or events on Binance or Binance Square, where you can claim free cryptocurrency.

- *Send Red Packets*: Use Binance Pay to send Red Packets to friends or new users, sharing the joy of cryptocurrency, #RedPacketMission