The so-called training for cultivators mainly involves increasing the proficiency in their own attack methods.
If a magic cultivator often uses a certain type or even category of Taoism Method, the consumption of True Yuan gradually decreases, and the speed and power of their spells can increase; the same applies to Assistant Officers, the more they use a Magic Treasure to refine, the more smoothly and flexibly it operates.
The Envoy belongs to a profession that does not put much emphasis on training, as they typically use low-rank servant envoys at the initial stage and seek to replace them with higher-rank ones once their cultivation improves... such as the Hundred Poison Golden Silkworm Gu and Ox-Head and Horse-Face, which are high-rank servant envoys worth using continuously in theory, but are so rare that even Chen Lingyun, with her background, couldn't obtain them, so most Envoy cultivators don't need to consider this and simply proceed with replacements.