I Asked You to Make a Toy, but You Made a Real Spaceship?

Chen Xuan built a toy factory and the products he released were deeply loved by people. At first, they never thought that the spaceship model made by Chen Xuan could really fly, that the steel armor could really be used in actual combat, and that alien bases could really survive on alien planets! There are also invading aliens complaining with bruises and bruises: When did the technological level of this planet become higher than ours?