sorry i cannot type chinese right now. i'm using the public computer in my lab.
frankly speaking, i don't think it is a wise idea to contace people too frequently like this.
if i were you, i would love to calm down for a second and start to do things I'm supposed to do, let's say, my thesis project for bachelor's degree.
people need time to arrange their schedules. also they need time to make their decision.
I'm pretty sure that you are not the only candidate for their phd program. Also probably there are more than 1 faculty who will interview you.
Secrectary needs to contact all of them and see all their schedules to make the decision.
So please do not annoy them too much. This will only decrease your probablity to get into a phd program, especially a bio program.
I suggest you contact them Wednesday or Thursday.
This week's Tuesday will follow Monday schedule coz the Monday was the president's day. Usually after a long weekend break, mountains of routine things will flood in the email box and trust me people HATE extras. You don't want to be that extra one, do you?