In order to prolong the service life of the chain, it is recommended to lube your chain every 500km or after riding in the rain or tough riding. You can lube your chain with grease (SAE 80W90/85W90) or lubrication.
First of all, get the dirt and dust off your chain. It is recommended to use kerosene to wipe off the dirt, wait until it dry and then lubricate.
       When cleaning, it is strictly forbidden to use volatile solvents (such as volatile oil, gasoline and other solvents) and steel (iron) brushes, high temperature, high pressure washers that can damage the chain.