# How does the ki point bonus advancement work for monk vows?

I would like to use the optional rule for taking vows as a monk, from the Ultimate Magic rulebook.

My player took the vow of poverty which grants 1 ki point for every monk level. Crystal clear. But he took also the vow of fasting, with a ki point bonus of 1 every 6 levels with a minimum of +1.

It is unclear to me whether:

• It is as stated and my player will gain a ki point every 6 levels with a mimimum of +1, meaning he will have +1 from him taking the vow until level 11, +2 from level 12 to 17, +3 from level 18 ;
• My player gains a fraction of 1/6 ki point per level rounded to +1 if the monk is level 1 to 5.

When I took a glance at reddit (this comment in particular), the general comprehension is that it works as a fraction at every level, working like the class of predilection special bonus. And that would mean that the fractional bonus of a class of predilection bonus would stack with the vow bonus. And it would easily be a headache:

If the player gains 1/4 ki point per level from his class of predilection bonus, plus a 1/6 ki point from his vow, he would in fact gain 10/24 ki points per level. With a minimum of +1 from the vow. Easy to count, right?

I plan on using the first rule, although the ki point bonus growth is very odd, but I may have missed some rule or something...

What is the correct interpretation?