article_snippet: Beijing (CNN)Five years ago, Beijinger Robert Zhao went on a trip to Tibet.
article_snippet: What Beijinger Robert Zhao encountered left Beijinger Robert Zhao confused but intrigued.
article_snippet: Beijinger Robert Zhao found something worth knowing.
article_snippet: Beijinger Robert Zhao works as an assistant to the boss of an environmental company.
article_snippet: So an environmental company has to send someone else to go with Beijinger Robert Zhao, which creates extra expenses," someone else says.
article_snippet: Journalist Dou Yiping contributed to this report.