The cafeteria clicked and ping-pong, and the students stood up and flocked to the two open doors and into the foyer. Yolanda, the first romance starter, also walked out with her friends.

They came to the entrance to Slyerin above, which was hidden behind a large portrait.

"Password?"

"Hibernation," said Regulus, "the next prefect told me." ”

The portrait bounced forward at once, revealing a large hole in the wall, from which they all climbed in. Located at the bottom of the lake, the translucent lounge has walls made of black Gothic marble and a transparent semicircle carved in crystal with a view of the sparkling waves overhead. The ceiling is chained with a greenish lamp. Inside, there is a fireplace with a beautifully carved mantelpiece and some carved chairs next to it. Through the windows, you can see some huge octopuses or strange creatures. After saying goodnight to her friends, Yolanda went back to the girls' dormitory to sleep.

The next morning, the storm had subsided, but the ceiling of the auditorium was still cloudy. As Yolanda, Sevrous, and Regulus studied their class schedule for the semester over breakfast, large clouds of blue-gray were tumbling overhead. At another table, Jaime and Sirius are discussing this semester's prom.

"It's a good day...... Outdoors all morning," Sevrous said, sliding his finger across Monday's column on the schedule, "Herb class, with Hufflepuff students, protecting magical creatures...... Unlucky, ...... with Gryffindor again"

"There are two divination lessons this afternoon." Yolanda lowered her head and sighed. Divination was a subject she didn't like very much. Professor Trelawney's prophecy was accurate, but it was not a pleasant prophecy.

At that moment, there was a sudden sound above their heads, and a hundred owls flew in through the open window, bringing everyone the morning mail. Instinctively, Yolanda raised her head, and the owl hovered above the table, looking for the recipient of the letters and packages. A large tawny owl flew towards Yolanda and threw a large package in front of Yolanda, apparently Ashley had chosen several more dresses for Yolanda. Yolanda rolled her eyes speechlessly.

When I came to Greenhouse Three, I showed Professor Sprout a plant to the class, which had never been seen so ugly. Actually, they are not like plants, but more like black, slimy slugs that emerge straight out of the soil. And they all squirmed slightly, and there were many shiny big bulges on their bodies, which seemed to be full of liquid.

"Babo tuber." Professor Sprout cheerfully told everyone, "You need to squeeze it with your hands, and you need to collect its pus—"

"What?" Yolanda asked in disgust, she hated this slimy thing the most.

"Pus, Stewart, pus," said Professor Sprout, "is of great value, and should not be wasted." Listen, collect the pus into these bottles. Wearing your dragon skin gloves, undiluted Babo tuber pus can cause unusual damage to the skin. ”

The process of squeezing the tubers is disgusting, but it also creates a strange sense of satisfaction. Of course, only Sevrous thinks so. Whenever a bulge is squeezed, it spews out a large stream of viscous, yellow-green liquid and emits a pungent gasoline smell. They collected the liquid in bottles, as instructed by Professor Sprout, and by the time the class was about to end, they had collected several bottles