Beijing students produce artificial clouds, snowflakes
Teachers and students of Beijing No.5 High School carry out extracurricular activities themed "SciTech Aids Winter Olympic with Campus Wisdom",Dec. 6,2021.
Teachers and students of Beijing No.5 High School carry out extracurricular activities themed "SciTech Aids Winter Olympic with Campus Wisdom",Dec. 6,2021.
Xinhua
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