Although he had advanced to legendary, he didn't know how much longer his lifespan had been enhanced by legendary.
This was because the path of knights was not like wizards. There was already a complete systematic theoretical system. The number of life extensions per ring was calculated by generations of wizards.
However, in the history of the seven kingdoms, those who could become legendary knights were as rare as phoenix feathers and qilin horns. Many of these legendary knights died before they could live to the end of their lives. There was no communication between legendary knights at all, because under normal circumstances, there was only one legendary knight in an era, and it was very difficult to have more legendary knights.
Therefore, Levi did not know how long a legendary knight could extend his lifespan. However, it should not be difficult for a legendary knight to live for two hundred years without illness or disaster.