Here's the corrected version of the story:
---
Caleb Li looked at the plain white room without any change in his expression.
At the center of the room was a medium-sized white crystal levitating in the air.
Standing beside him was the female examiner with a device in her hand.
"Student Li, please go and touch the crystal," she instructed.
Caleb Li did not think twice and walked toward the crystal, placing his hand on it. Immediately, a stream of strange energy tried to invade his body. Noticing this, the corner of his lips curled upward a bit, and he let the energy pass through his meridians.
Though he allowed the energy to invade his body, he still restricted some areas, hiding his real strength.
Shortly, the energy returned to the crystal, and a sound echoed in the room.
"Student Li, you can return," the examiner said.
"Am I done?" he asked.
"Yes," she responded, and a holo screen appeared before Caleb Li.