C1523 Mysterious Map

Although Shi Lei did not know what the Large Fly ate, but even if it ate grass, to be able to eat such a huge group of Large Fly, how large would the number of herbs be?

If it was according to the eating characteristics of the flies on Earth, how much carrion would it take to supply so many Large Fly?

In any case, to Shi Lei, the Spirit Vein he had now, would definitely not be able to supply