What are the best practices for securing a bicycle with a bicycle lock chain?

To secure a bicycle with a bicycle lock chain, follow these best practices:

1. Choose a high-quality lock chain made of hardened steel.
2. Lock the bike frame and wheels to a fixed object, like a bike rack or pole.
3. Position the lock chain off the ground to prevent leverage attacks.
4. Use multiple locks or a combination of locks and cables for added security.
5. Lock the bike in a well-lit and visible area to deter thieves.