Ever since he received the "sect-destroying" quest, Jiang Beiran had kept the most effective divination until now. His goal was to have more confidence.
Because his divination points were not high, the divination would only work one time out of ten times. However, if he accumulated the point and did not use it, it would be like luck stacking up. Hence, he could do an almost 100% accurate divination.
For example, Jiang Beiran had divined the location of the Thunder Spirit Flower in this way.
And this time, Jiang Beiran was prepared to use the accumulated luck to ward off disaster.
Generally speaking, he should have thought of a question or something he wanted to know before the divination. However, Jiang Beiran did not know if it were because his cultivation was too shallow, his divination would not be accurate if he did it for a very specific purpose. He only nailed it a few times when he was just doing the divination casually.