In Douluo Dalu, the System Says I'm in Investiture of the Gods

After transmigrating into the Douluo World, Shen Qiuran becomes the son of a retainer of the Star Luo Zhu Family. But the stupid System thinks he's in the world of Investiture of the Gods. His awakened Martial Soul is a black panther, but the System thinks Shen Qiuran is Shen Gongbao, a leopard who has attained human form. [Beginner Mission: As Shen Gongbao, you should have a mount of your own. Find a white-fronted tiger to serve as your mount.] (You cannot unlock the following missions until this one is complete.) [Main Mission: Enter the service of the Great Shang as its Imperial Preceptor and help it rewrite its fate of destruction.] Hold on, System bro. Forget about how an Imperial Preceptor is supposed to rewrite fate. The main thing is, I'm not in the Investiture of the Gods! Where am I supposed to find the Great Shang? [Mission Triggered: The person ahead is the Quasi-Sage Kong Xuan. Recruit him to join the Great Shang.] There's no Kong Xuan here! Isn't that just a chubby little kid up ahead? Only later did Shen Qiuran gradually understand. So that's what it means to have a mount? Was this what the original Investiture of the Gods script was supposed to be?