Students don't have a car, how can they go to Saihu after arriving at Boluo Station? Are there any long-distance buses available?

Can take a coach, every half an hour.

Yili Passenger Station has buses going to Sareim Lake, or you can sign up for a one-day tour (bus group/travel group).
I have signed up for a 2-6 person small group one-day tour. Pick-up and drop-off service available, you can stop wherever you like along the way, see whatever you want, and play as you please, very convenient.
I don’t know, I signed up for a day tour group.
I’m not sure about this, I went there by renting a car.
You can take a long-distance bus, with one every half hour.

Yili Passenger Terminal has buses going to Sareim Lake, or sign up for a one-day tour (bus tour/group tour).