Today, I am playing Doomsday Survival. Together with my friends, I plan to make some blueprints for firearms. However, blue pigment is extremely rare. At present, only lapis lazuli and blue flowers can make blue flowers. The growth probability of blue flowers is less. Only four bone powders can grow one. My friend went to plant sugar cane and planned to make paper. And we used up all the materials to build an iron fence, barbed wire, sandbags, a city wall, a small fortress and red stone gate. We only have more than 140 pieces of iron left, which can only be used slowly. I made a small tree farm in the last remaining time, because we need to use charcoal to make sulfur acid and then gunpowder, so we saved a lot of coal. Coal blocks plus a wooden stick and an iron drum can be made into oil, so that we have keep flowing in a steady stream plastic to make gun accessories, and now everything is developing in a good direction!