Su Hang's mind flashed with the character behind that giant, which contained a power that was both strange and unpredictable.
He attempted to write that character on the door, finding it extremely difficult to maneuver the brush; the first stroke alone took him a full three hours.
Su Hang exhausted most of his immortal power and was covered in sweat from the effort.
He circulated "The Great Heavenly Immortal Technique" to recover his strength, and it took another five hours before he could complete the vertical stroke.
Su Hang's immortal power was drained, so he supported his weary body, took out an Immortal Stone, and began to restore his power.
Once his strength was regained, he saw that a crack had formed in the door; with a push, the door "crack" opened.
"That's great!" Su Hang exclaimed joyfully.