1。 First put the butterfly and triangle together in a wet jar or a wet plastic bag for three days, which is softer and easier to spread their wings. 2。 Find a foam plastic board and stick a thin plastic film on it to prevent the butterfly powder from rubbing off. 3。 Cut a small hole in the plastic board and put the antenna in to prevent it from breaking down. 4。 Carefully spread the wings of the butterfly with flat-headed tweezers and fix them with a layer of plastic film and tacks. 5。 Put it in a cool and ventilated place for 4 or 5 days to dry, and put it in the sun for half an hour to prevent mildew and sterilization. 6。 Finally, the chest and abdomen of the butterfly are fixed in the butterfly frame with glass glue. 7。 Put some sanitary balls in the butterfly frame and fix them to prevent insects. This is the end. The questions are as follows: 2. Whether you can or should bask in the sun for half an hour to prevent mildew. 3。 The best way to fix it in the butterfly frame is to fix it with glue or to fix it with a tack through the chest. The tack will damage some specimens, and the glass glue has a good fixing effect, and I don't know if there will be any chemical reaction in the future, so it is not convenient to move the frame in the future.