If it is not the main battle, it is found that the science and technology ball will run to the swallow behind the dragon riding for the first time and let the dragon riding block the science and technology ball.

If it is the main battle, the swallow must freeze his science and technology ball at the first time. If the technology ball is frozen, you can't use magic or hide it. If he runs out of radar, it's over. Some slutty P will also get a transport plane to throw a hidden knife to tease Terran radar.

Swallows should be separated, some in front and some in the back, not all at once.

If you have enough money and oil, it is also a good idea to give a red ball. If you don't have a chance to reform, use feedback. I tried to make two fake swallows in front of the lightning soldier to tease him about the science ball, which was quite irritating.