The text is from Suwen-Zhizhenyao Da Lun. "下" means sinking, and "舉" means lifting. For the sinking of middle qi, one should use tonifying Chinese medicinals to lift it. For example: if middle qi is deficient and sinks, leading to prolonged prolapse of the rectum, one can use tonifying middle and replenishing qi medicinals to raise the middle qi, thereby resolving the prolapse of the rectum. See the entries for "tonifying qi" and "uplifting the middle qi".