Those several white coats were shouting, Han Xiao hadn't heard their language before, but he could understand the meaning. "Experiment", "survival time", "guard" these words made him feel uneasy. Footsteps sounded urgently outside the door, someone was quickly approaching.,Template: NPC (1.0 version public test countdown: 358 days 11 hours 03 minutes),He recognized "Red Serpent" Hela. This was one of the challenge scenarios on Haelan Star - the "Valkyrie Laboratory," a subordinate base of the Sprout Organization.。