First of all, I tell you that the materials needed for strengthening are random, and gems are indispensable for strengthening. Gems were bought in Venice Jewelry Store, London Jewelry Store and London Jewelry Store, and China's gems were bought there for small synthesis. Large gemstones are synthesized from small gemstones and then synthesized in Aden. Large gems are synthesized in Quanzhou, and the equipment needed for strengthening can be replaced by fusing agent. If there is no fuse, you can honestly exchange it with others. The dragon spring water needed for strengthening is bought in the shopping mall, which has no effect on the strengthening of Zheng Longshui and Dragon.