Metropolis: If You Are Asked to Cultivate Immortality, Will You Sacrifice Your Master to Heaven?

[Urban cultivating immortality + multiple female protagonists + easy daily life] Ye Chen has been practicing in seclusion in the mountains for many years, but has never learned any real skills. He almost died at the hands of his master. Fortunately, the system awakened at the critical moment and killed the master. While cleaning the battlefield, he unexpectedly received 68 marriage letters left by his master...