Is BF lower in the middle and late stage? After the operation of the second mine, it must be supplemented by double BF upgrade attack and defense. Single BG mine and then turn to 3BG sentry defense. After No.2 Mine, 5BG VR was added while VC was put down. At about 9: 30, the third investigation or the first exploratory attack will be conducted to determine whether to open No.3 mine. If the other party has no intention of mining, it must wait until both AOEs begin to learn (about 12 minutes), so that even if the other party suppresses, the double AOE can resist the other party's attack. The combination of machine gun+tank+transport ship you mentioned can be prevented by directly flattening A with the cooperation of Immortal Mine No.2 and Speed-up X. What's more, if your previous sentry posts accumulate, as long as the other party doesn't come to suppress you at 8: 30, you will basically not be hurt. Even if it is suppressed at 8: 30, the slope of No.2 Mine will be blocked, and the tank will be blown off once 9 minutes and 20 seconds.
A diamond-grade P, with experience in playing T, does not spell operation, only spells operation and strength collocation. There is no way out. If the old man can't keep up with the operation, he will work hard on the overall situation.