What is the total days (1 year, multiple trips) Singaporeans can be in China on a tourist visa?

Hi - I will be travelling in and out of China (less than 15 days per trip) a few times this year. What is the accumulated total number of days (1 year, multiple trips) Singaporeans can be in China on a twov Exemption?

Also, if I do apply for the 6-month Multi-Entry, what is the maximum number of days I can be in China over the course of 1 year?

Thank you.