ie nan2 kak於何時temporal wordinterrogativeat what time

於何時学処始?

ie nan2 kak nui2 hue hut2?

What time does the school start? / 学校几点开始?

於何時汝行学処?

ie nan2 kak mua2 mok1 nui2 hue?

What time do you go to school? / 你几点上学?