The mysterious burly man was of course Su Zimo.
Upon returning to Great Rock Forest, he reverted to his appearance and wore his green robes, looking like a scholar once more as he sped towards the core region.
The decision to change his appearance was one Su Zimo made after a lengthy consideration.
Even though it was true that Zhou Wei's gang was there to cause trouble for him, something like that was difficult to explain to the sect. If all five of them were to deny it, he could do nothing about it too.
Instead, he might even be the one punished for injuring them so badly.
At the same time, Su Zimo's ace in the bag was his strength at melee combat and he did not wish to have it revealed so early.
Furthermore, all he had to do was change his appearance and identity and that would be reason enough for him to loot their spirit stones and elixirs entirely.
While they might feel wronged about it, they would have nowhere to complain.