Write idioms about studying the weather carefully.

Forget about eating and sleeping, hang a beam and taper a bone, draw light through a wall, study hard, scrape and quench, snow with fireflies, bear hardships and stand hard work, gather fireflies for snow, gather fireflies for snow, and are extremely unwilling to score less, work hard, study hard, learn books from the clinic, work hard, and sharpen their knives. Drink courage and taste blood, log the police pillow, dig the wall to borrow light, pillow a brother tastes courage, pillow a brother drinks courage, work hard, attack suffering at night, hang the beam and stab the stocks, sit on the firefly mat in snowy days, draw a cone and stab the stocks, draw light through the wall at dusk, stab the stocks to read, and have a threesome. There must be some teachers who don't learn as well as you, and you are afraid of losing.