Chinese authorities has issued a stern warning to casino operators a year ago to stop marketing to gamblers, but Crown Resorts Ltd. chooses to look the other way.

Bloomberg reported that Chinese authorities have been keeping a close watch on casino operators who have been engaging in attracting high rollers from the mainland to gamble overseas by tweaking their respective marketing strategies.

The police surveillance against Crown was part of a Chinese operation targeting gambling-related activities dubbed as “Duanlian.” The aim was to unshackle personal and financial links of Chinese high rollers from foreign casinos.

A source who spoke to the business news agency on the condition of anonymity revealed that China has given a year for casino operators to comply with their directive.