Judging by the situation at the time, if it were about doing other things, Zhou Tian really didn't have the confidence to guarantee there wouldn't be any problems. But as for now, merely inciting a war in that world at the time posed no difficulty at all for Zhou Tian.
To speak honestly, Zhou Tian's appearance in the current world was an unsettling factor. Given how fragile the balance was at that world back then, Zhou Tian's emergence would be enough to disrupt it in the future. And under those circumstances, should Zhou Tian accelerate this speed on his own, triggering a race war in that world within a short time was not difficult.
Because he had been invincible for too long, Zhou Tian estimated that the Burrow Spiders were already becoming irrationally arrogant in their world. Although the strength of the Burrow Spiders did indeed give them the right to be arrogant, in any case, their mentality was easily exploited by Zhou Tian.
