THE red flag is up. The report that a substantial number of Chinese tourists has been converting their tourist visas into working visas has been confirmed. This was revealed by the Department of Labor and Employment (DOLE) during a hearing of the Senate committee on labor, employment and human resources on Monday. And how big is that number? According to DOLE, it issued some 52,000 alien employment permits (AEPs) for Chinese workers. However, some senators estimate the number to be even higher.