"You are here to learn the subtle science and exact art of potionmaking," he began. He spoke in barely more than a whisper,but they caught every word -- like Professor McGonagall, Snape had caught every word -- like Professor McGonagall, Snape had the gift of keeping a class silent without effort. "As there is little foolish wand-waving here, many of you will hardly believe this is magic. I don't expect you will really understand the beauty of the softly simmering cauldron with its shimmering fumes, the delicate power of liquids that creep through human veins, bewitching the mind, ensnaring the senses.... I can teach you how to bottle fame, brew glory, even stopper death -- if you aren't as big a bunch of dunderheads as I usually have to teach."
“OH,POTTER! How dare you late on my class....” Professor Severus Snape’s lips curled into a sneer. "Tut, tut -- fame clearly isn't everything. Or it can may you some brave to came late?"
“And a point will be taken from RAVENCLAW House for your inpolited, Potter.” Snape snapped at Chu Xuan,”As a RAVENCLAW...Do you know what would I get if I added powdered root of asphodel to an infusion of wormwood?”
“Asphodel and wormwood make a sleeping potion so powerful it is known as the Draught of Living Death” A smiled is found from his face.
“So again. where would you look if I told you to find me a bezoar,Potter?”
“A bezoar is a stone taken from the stomach of a goat and it will save you from most poisons.And it also can use on ancine Chinese medicine..”
“Well... a RAVENCLAW...”Snape show a cold smile...”Last one , What is the difference, Potter, between monkshood and wolfsbane? “
“They are the same plant, which also goes by the name of aconite.”Chu Xuan take a notebook out from his bag,” This is my note. Professor. If you want to cheek my homework...”