BEIJING (Dow Jones)--A Chinese Internet regulator held a three-day meeting in Beijing for representatives from 39 Chinese "websites and Internet companies" including Baidu Inc. (BIDU) and Tencent Holdings Ltd. (0700.HK), and attendees agreed on a need for stronger measures to cultivate a "healthy" online culture, China's state-run Xinhua news agency said Sunday.

Attendees at the meeting, which ended Saturday and was held by the recently formed State Internet Information Office, agreed that "Internet companies must strengthen their self-management, self-restraint and strict self-discipline," Xinhua said.

Attendees included Baidu Chief Executive Robin Li, Tencent Chairman Pony Ma, Alibaba Group Chairman Jack Ma, top executives from China's three telecom operators and from other Internet companies like Sina Corp. (SINA), and computer-maker Lenovo Group Ltd.'s CEO Yang Yuanqing, the report said.

The event comes as Chinese officials in recent months have stepped up their calls for Internet companies to better police their own services for "harmful information" and "rumors." Those terms are often bywords for information seen as sensitive by China's leaders.