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A classroom setting. A woman stands facing a green chalkboard covered with mathematical equations and symbols written in white chalk. She is pointing to a screen above the chalkboard, which displays a medical illustration of the "Three concave sign." The screen also has text in English, likely explaining the medical condition. A video camera is mounted on the green wall beside the chalkboard. To the right are rows of student desks and chairs. There is a textbook with the words "CHONGQING MEDICAL UNIVERSITY" visible, indicating this is likely a classroom in Chongqing High-tech Zone, China.
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May 26, 2026, 1:34 AM

Chongqing High-tech Zone, China

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A classroom setting. A woman stands facing a green chalkboard covered with mathematical equations and symbols written in white chalk. She is pointing to a screen above the chalkboard, which displays a medical illustration of the "Three concave sign." The screen also has text in English, likely explaining the medical condition. A video camera is mounted on the green wall beside the chalkboard. To the right are rows of student desks and chairs. There is a textbook with the words "CHONGQING MEDICAL UNIVERSITY" visible, indicating this is likely a classroom in Chongqing High-tech Zone, China.

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May 26, 2026, 1:34 AM

Chongqing High-tech Zone, China

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