Some Chinese mainland travel agencies have suspended tours to Manila, after Monday's bloody hostage-taking tragedy. Fewer holiday makers are booking trips to the Philippines. And as Niu Yun finds out, those who have booked are canceling their trips.

Many travel agencies in Guangdong province have temporarily suspended tours to Manila. Other tours transferring in Manila to other islands, or flying direct to other parts of the Philippines, are still running. But many Guangdong residents, worried about safety, are hesitant.

Guangdong Resident said "It's not safe there. I considered going, but now I don't want to."

Cai Minyu, one travel agent said "All of our customers withdrawing bookings today are for their Manila trips. Other Philippine tours are also obviously affected, with bookings going down by half."

In Ningbo, Zhejiang province, some travel agencies have suspended all tours to the Philippines.

Jiang Lei, one travel agent said "We've taken down all advertisements for tours to the Philippines. The incident may affect packages to some degree. Many customers fear it's not safe."

But Shanghai travel agencies say 25 of their tour groups are currently in the Philippines now, with a total of 650 travellers. Their trips haven't been affected by the incident.

China's National Tourism Administration is reminding travellers to be cautious when visiting the Philippines in light of Monday's hijacking. Chinese travellers are advised to take safety precautions, and contact local police and Chinese authorities in case of emergency. The administration is also requiring travel agencies to be on high alert, with safety being a priority for their clients.