Can i know is the tools(flying star calculator...etc) in the website based on lunar calendar or the normal one?We should be using the lunar calendar to get the answer right?

Dear Khian Boon, all Feng Shui and BaZi systems use the Chinese SOLAR calendar. The lunar calendar (used for Chinese New Year) is irrelevant. The Chinese Solar Calendar runs parallel with the Western calendar (except that it starts Feb 4th) so you can safely use the standard dates. Cheers! Sherwin