Solution to a broken bicycle chain:

First remove the entire broken chain: align the ejector pin of the chain breaker with the pin in the chain, and then pull the chain breaker off. Tighten the chain slowly and remove the pin. Insert the chain quick buckle into the chain mesh at both ends, one forward and one backward.

Buckle the two ends again, and the broken chain will be connected. First remove the entire broken chain: align the ejector pin of the chain breaker with the pin in the chain, then slowly tighten the chain breaker to remove the pin. Insert the chain quick buckle into the chain mesh at both ends, one forward and one backward. Then fasten the two ends and the broken chain will be connected.