1. The teacher stands on the podium and gives a lecture to the students，Clear facial features，Business suit，‎Classroom，blackboards，Happy Teacher's Day，fresh flowers，cinmatic lighting，Masterpiece,，depth of fields， lens flare glow，8K， RAW photos， sportrait， best qualtiy， 超高分辨率， realisticlying，超高分辨率，HD CG unified 8K wallpapers，physically-based renderingt，

(nsfw:1.5),paintings, cartoon, rendered, anime, sketches, (worst quality:2), (low quality:2), (normal quality:2), wet, child, chest hair, dot, mole, lowres, normal quality, monochrome, grayscale, lowres, text, error, cropped, jpeg artifacts, ugly, duplicate, morbid, mutilated, out of frame, extra fingers, mutated hands, poorly drawn hands, poorly drawn face, mutation, deformed, blurry, dehydrated, bad anatomy, bad proportions, extra limbs, cloned face, disfigured, gross proportions, malformed limbs, missing arms, missing legs, extra arms, extra legs, fused fingers, too many fingers, long neck, username, watermark, signature,