All undead summoned by Heine land already at Level 2.
Upon reaching Level 3, they unlock a "gift skill" that doesn't require learning.
Teacher Xia unlocked the colloquially known "Cheat Death."
Zhuo Yang's is a three-second guaranteed explosion, actually an extreme overload of the Blessing of Faith.
Director Sa got the Tracking Technique, and Wei Dianyuan got... uh, urinary... Spell Splitting.
Even the two evil spirits awakened the non-combat profession "Role-playing" skill.
Though the names differ, the effects are the same; they help them better digest and feel the memories of the person they possess.
Only Big Yellow was different from the others.
Even though he leveled up to Level 4 upon landing, up until now, all he can do is bark nonsense and hasn't mastered any skills.
Moreover, the color of his Soulfire hasn't even changed.
Because of this, everyone, including Heine, believes he actually possesses the "Transformation Spell."