MTL - The End Of The World’s Poisonous Mom And Monster Baby - v3 Chapter 48 found the source

As a promise, he went out into the world as an assassin. 3 years later, after becoming the Supreme Assassin, he gave up on everything he had and returned to the ranks of ordinary people. But one day, Kismet, a mystical game created by the National Research and Development had appeared.

Enigmatic hands, spectral frame, and one cunning strike just like the swing of the Grim Reaper. The Supreme Assassin takes on the mystical world, and how his legendary tales sets off, progressively ascending the altar to becoming the best.

- Description from Novelupdates

After transmigrating to a parallel modern city, Zhang Yang became an international student overseas.At the same time, he awakened the Kaitō Kid System Template!His very first warning letter boldly pointed at the British Museum, targeting a lost Dragon Nation treasure!Meanwhile, the British authorities officially announced a full livestream of Kaitō Kid’s capture attempt!And so, under the watchful eyes of the entire world, a one-man show began—A dazzling performance that belonged to Zhang Yang.That belonged to the Silver-Winged Magician, Kaitō Kid!

Jiang Yining was transmigrated to a cultivation world and became the master of the Tianyan Sect.

Unfortunately, the sect was broke and he only had three disciples. Just as everything was about to fall even further apart, he received the Golden Finger.

To make it even more interesting, the Golden Finger was an idle cultivation game that Jiang Yining had played in his previous world.

[Welcome back, long-time player. You will inherit your old account that has been idled for a million years.]

From the game, Jiang Yining could receive martial arts, resources, fates, buildings, skills, and even spiritual roots from checking in and completing quests.

He vowed that he would use the rewards to grow his own sect.

In the world of cultivation existed prestigious families, sects, kingdoms, and even celestial sects. Everyone’s goal was to ascend to a celestial being.

However, years later, Jiang Yining and his Tianyan Sect sat on the Long River and looked down at the people still struggling in the celestial realm.