C643 The Biggest Secret Weapon

Dang Shanshan couldn't help but say curiously, "Zhang Tian, you don't even have an experimental tool, nor do you have any raw materials for it. "How are you going to study this?"

Zhang Tian laughed, "Actually, this is not too difficult. "I've already listed out the various formulas. When the time comes, I just need to wait for you to come and do an experiment