Everyone's Crypt Survival: from the Jurassic Era

(This is the first time a newcomer has written a novel. The comic adaptation has been filmed and the short play is being filmed. The physical book has been signed. You are welcome to read it. The rating will increase after it is released!) [Tower defense + era evolution + national survival + system + airdrop + multiple heroines + construction flow + stocking up] Others rely on desperate efforts to survive, but I rely on doggedness to survive. Start with a colorful crypt and activate the only hidden talent [Infinite Furnace]. Any item can be strengthened, the quantity will be doubled, and the quality will be critical. 1 Gold coin of mineral water goes in and D-level life potion comes out. F-grade wooden fence is strengthened into C-grade black gold steel door. The D-level arrow tower evolves into a three-link heavy ballista. Others are still eating compressed biscuits while I am roasting suckling pig with beer. The crypt was upgraded to a 300-square-meter finely decorated small villa. Jurassic is just the appetizer. Later there are primitive tribes, iron hegemony, spiritual energy recovery, and the arrival of strange things... The more dangerous the times, the harder I strengthen myself. I won't go to the airdrop war, but I will hide in the crypt war. . Enemies blocking the door? Arrow Tower taught him how to behave. A homeless beauty trap? An arrow without a sound. When the gods came to the world, all players knelt down and begged for mercy. I silently strengthened the God-killing Crossbow ten times. Aim at that lazy system voice in the sky. "The game is over, it's my turn to take over."