关于时机选择问题，也就是最佳的有利时机问题，在什么时间、什么情况下才能以最小的代价获得尽可能多的利益或者有更大的把握达到所追求的目标。日本帝国主义在1937年中期，发动新的大规模的侵华战争，实质上并不是少数下级军官不听命于中央所致，而是经过认真准备，审慎选择? On the issue of timing, that is, the best favorable timing issue, at what time and under what conditions can we gain as much benefit as possible at a minimum price or have more certainty to achieve the desired goal. In the middle of 1937, the Japanese imperialists launched a new large-scale war of aggression against China in essence. Not a few junior officers at large were not obeyed by the Central Government but were carefully prepared and carefully chosen.