more like 400 pages lol 19days is pretty short
He did, the scene hasn't been shown yet as we're currently in the future/present where he already left but in their high school days, He Tian already told Mo that he might be leaving after high school due to family business reasons. He Tian actually leaving has yet to be shown tho, but because of how Mo acts there's speculation that He Tian left without saying goodbye.
Oh! Thank you for this! I knew I kinda read somewhere that that was the case but can't remember correctly (and what chapter that was lol)
I kinda want to reread this bc I think I'm forgetting what happened during/after high school (like did he tian leave mo or something?) But 400+ chapters is really daunting to read again haha