I want to organize a go on road trip. If there is an accident on the way, do you have the responsibility to compensate the hitchhikers? How to avoid it?

By signing an agreement, the driver is exempted from responsibility and has no legal effect. The best way is to rent a car from a travel company to avoid disputes.

Contract law of the people's Republic of China

Article 302 The carrier shall be liable for damages for the passenger's death or injury during the transportation, except that the death or injury is caused by the passenger's own health or the carrier proves that the death or injury is caused by the passenger's intention or gross negligence.

The provisions of the preceding paragraph shall apply to passengers who travel free of charge, with preferential tickets or with the permission of the carrier.