Chapter 754: Absolutely Cannot Return to the Past

ilable until later generations. The reason why ancient people couldn't extract high-purity gold is because they didn't master the production and use of those chemical raw materials. 。Those things that...there is news or not doesn't make much difference. Brother, don't ask about it anymore, let's talk about it then!" Ye Feiyu sighed softly and stopped asking further questions. 。"There is something I...