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DXY.cn. (January 24, 2021). Effect of actions intended to mitigate sleeping issues in China as of December 2020 [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved July 20, 2026, from /statistics/1288795/china-results-of-actions-mitigating-sleeping-problem/
DXY.cn. "Effect of actions intended to mitigate sleeping issues in China as of December 2020." Chart. January 24, 2021. ÌÇÐÄÆÆ½â°æ. Accessed July 20, 2026. /statistics/1288795/china-results-of-actions-mitigating-sleeping-problem/
DXY.cn. (2021). Effect of actions intended to mitigate sleeping issues in China as of December 2020. ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: July 20, 2026. /statistics/1288795/china-results-of-actions-mitigating-sleeping-problem/
DXY.cn. "Effect of Actions Intended to Mitigate Sleeping Issues in China as of December 2020." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 24 Jan 2021, /statistics/1288795/china-results-of-actions-mitigating-sleeping-problem/
DXY.cn, Effect of actions intended to mitigate sleeping issues in China as of December 2020 ÌÇÐÄÆÆ½â°æ, /statistics/1288795/china-results-of-actions-mitigating-sleeping-problem/ (last visited July 20, 2026)
Effect of actions intended to mitigate sleeping issues in China as of December 2020 [Graph], DXY.cn, January 24, 2021. [Online]. Available: /statistics/1288795/china-results-of-actions-mitigating-sleeping-problem/