https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13957323Edit ImageSaveSaveEditCropCustom TextDaoyin technique to prevent fatigue and coughing, C19 ChineseOriginal public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 800 x 1200 px | 300 dpiLarge JPEG 2098 x 3146 px | 300 dpiFree DownloadDaoyin technique to prevent fatigue and coughing, C19 ChineseMore