Li Fu, manager of Huatian Yanji Cold Noodle Restaurant chain, said it is impossible for them to achieve 100 percent smoke-free standards.
"We often try to persuade smokers in restaurants not to do so, but it depends what kind of customers we're dealing with," said Li.
If the smokers are reasonable, they will listen, said Li.
"But some call you names and make trouble. We can't force the customers to obey the rule, so we often ignore them," he noted.
If other customers complain, Li said they will try to seat them away from the smokers.
Yang Gonghuan, deputy director of the Chinese Centers for Diseases Control and Prevention, said that restaurants should take responsibility if they fail to stop smokers.
"The customers should be persuaded to give up smoking in restaurants. If the restaurant fails to do so, they will be fined. And the restaurants need to report the violation to the Beijing Patriotic Health Campaign," said Yang.
Restaurants can be fined from 5,000-10,000 yuan ($1,606) for violating the ban, the Beijing Times reported in March.
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