Only 1cm of height growth a year means that the rapid growth period is at its end, which means that even if the height can grow, it will not be obvious because the height of a person mainly depends on the ossification and chondrogenesis of the epiphysis and the epiphysis, which results in rapid height increase. When the ossification of the epiphysis and the chondrogenesis of the epiphysis are gradually completed, the epiphysis closes. After the epiphysis closes, it is not possible to experience significant and rapid growth, but there will be mild growth, but it will not be significant. There are several signs of epiphyseal closure, among which a slowdown in growth is a clear sign that the epiphysis is about to close. A slow growth rate of only 1cm a year is a concrete sign of slow growth, which means that the height will grow, but there will be no significant and rapid growth.