Changsha officially met at the sight of Yueya. According to the inquiry letter, Yijiantang is the registered trademark of Hubei Yijiantang Technology Co., Ltd. ... Is keeping healthy a verb or a noun? It originally refers to a medical activity to maintain life, enhance physical fitness and prevent diseases through various methods, thus prolonging life. Raising is nursed back to health, maintained and nourished. Life means living, surviving and growing. In the modern sense, "health preservation" refers to actively maintaining physical and mental health according to the laws of human life process.