Ye Qiu transmigrated to a world of barren wastelands. He obtained the 10,000 Fold Return System. By teaching or giving his disciples something, he could obtain high critical chance returns. [Ding! You gave your disciple a Marrow Cleansing Pill. You activated a 1000 fold critical chance. You obtained a God Marrow Pill.] [Ding! You passed on ten years of cultivation to your disciple. You activated a 100 fold critical chance. You obtained 1,000 years of cultivation.] [Ding! You gave your disciple a superb grade treasure, the Zixia sword. You activated a 10,000 fold critical chance. You obtained a Deity Sword Cloud.] His disciples praised, “Master, you are so generous. You always give us everything you have.”
It's an R-18 story, but still a story. The mature scenes only happen in the first arc, the second and third arc are full of mysteries, intrigues, romance, and slice of life. It's not a harem story, and the lovemaking between the two leads is done out of love. The best-selling points of this story for me are the MC's growth, the mysteries, ML.