Visa free for group tour to Guilin, China

Hi, I am Azam from KL Malaysia and working for a local travel agent. I have a group of 30 clients going on tour for 5 days 4 nights to Guilin this Dec 2015. My PRC tour operator emailed to me and said that now it is visa free to Guilin (for group tour I guess) and I only have to fill in an excel form given by them. The form requires details of guest and passport. Once I submit it, my operator shall process it.
I did a research also in the web and found news that says for ASEAN countries, group tour not more than 6 days can get this free entry facilities.

Kindly advise.
Thanks/Azam