You can gain vitality points by planting in the manor for more than 1 hour. The more time you have, the more vitality you will have. The vitality value is useless if you don’t build a building like a blacksmith shop inside. If you build it, then production will require vitality value. If you don’t harvest all the vitality at once, it will be full. The upper limit is estimated and the level is It's also very long about me.