Ling Jian Zun

reincarnation. op and genius mc. he also love only one woman and does not cheat on her.  

Similarities - Both MCs reject political marriages and want to marry a servant - Both MCs infiltrate Sects to gain revenge against their families - Both MCs have a secret relic/power that helps them cultivate faster - Both MCs kill their enemies without regrets - Both MCs have a one in a million talent - Both stories are xianxia cultivation in Ancient Chinese Differences - Sky Supreme MC reincarnates from his past life so knows his future VS. Spirit Sword MC discovers information for his revenge from interrogation - Sky Supreme story is straightforward VS. Spirit Sword story is difficult and hard to follow  

Similarities - Both MCs initially chase after the popular girl but get rejected and settle for the less popular girl - Both MCs are considered 'trash' with no cultivation - Both MCs live in poor/branch family conditions - Both MCs want to get revenge Differences - Spirit Sword Sovereign MC doesn't get betrayed like MC in Tian Huang - Tian Huang MC is lazy and weak VS Spirit Sword Sovereign MC is optimistic and hides his cultivation - Tian Huang MC is a simp (which is why he got betrayed) VS Spirit Sword Sovereign MC had a rocky relationship so married the less popular girl