People who light up in smoke-free zones in Shenzhen could face up to 500 yuan ($81) in fines, according to the draft of a newly revised regulation on the city's smoking ban, Guangzhou Daily reported on Monday.

The draft also stipulates that businesses that sell tobacco to minors could face fines up to 20,000 yuan. The revision also adds more penalties concerning the smoking ban.

For example, tobacco producers and sellers will be fined 100,000 yuan for giving free gifts, samples or promotion materials.

The management or owners of venues where smoking should be restricted will be fined 30,000 yuan for failing to set up smoking rooms, refusing to ban smoking, and not correcting their wrongdoings.

A legislative hearing for the bill will be held in May.