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.,"How's the experiment going" a subordinate behind him spoke, his voice gravelly with a hint of fatigue, like a cup of strong coffee, languid yet with a touch of something more.,There are 1.5 million words in the old book "The Evil Demon Race", you can watch it with confidence.。