(A beginner's work. The author isn't thinking things through, so the first dozen or so chapters may be a little padded. Please be encouraging and don't flame me.)
Ever since the Red Moon appeared, everyone has undergone an awakening ceremony at the age of eighteen. Only one in ten thousand awakens an innate supernatural ability. Xu Zhu's awakening seems a little strange. While everyone else gets the power to control fire, ice, water, or lightning, he gets a System panel that tells him to go around burning incense every day. All he gets from burning incense is a wisp of fragrance drifting into his mind. Just as everyone is laughing at him for being nothing but an incense burner, one day, out of the blue...
"Ding! Congratulations, Host, on completing 365 daily incense offerings."
"Ding! Congratulations, Host, on officially activating the Incense Cultivation System. Incense offerings can now be exchanged for any resources the Host needs."
From then on, he raids dungeons and battles the uncanny.
But when he stands before the Hall of the King of Hell, he discovers that this world may not be quite what it seems.
Very eloquent hydrology