Cultivation of Immortality in His Later Years Started from Passing the Jiazi Exam

Traveling through another world, Zhong Xuan became a child at the age of fifteen and was praised as a child prodigy from all over the country. After that, he did nothing for forty years and made no progress. In the year of reincarnation, everything is renewed and his mortal bones are shed. The older he is, the better his bones are. At the age of sixty, he passed the imperial examination. At the age of seventy, he entered the cabinet and became the prime minister. At the age of eighty, he destroyed the nine kingdoms and opened the gate of heaven. ... A hundred years later, a supreme genius in the world of immortality was born. After practicing for two hundred years, he ascended to enlightenment and became the first immortal in all time.

Li Lao wants to befriend an old man who has only practiced martial arts in his 60s. Could it be that he has seen through the protagonist's golden finger?