The electroplating layer of the bicycle is dusted off with a dry cloth and coated with neutral oil (such as sewing machine oil); the paint film of the bicycle body is wiped with a feather broom. Do not rub with oil or expose to the sun; any bicycles that are coated with varnishes cannot be polished with car wax, as the paint will fall off; after the bicycle is exposed to rain, use a dry cloth to absorb moisture to prevent rust; bicycles The shaft, flywheel, front fork, pedals, etc. should always be greased or lubricated, and the flywheel should be lightly greased. The bicycle is washed with kerosene once a year. Be careful not to place bicycles near heaters, kitchens, coal stoves, etc. to avoid carbon monoxide gas corrosion.