I had a nightmare experience when I was a child. I was suppressed by something, and I couldn't say that I couldn't be moved. Later, someone taught me to recite "Avalokitesvara Bodhisattva". I believe it and keep it in my heart. The next time I have a nightmare , I could not recite "Avalokitesvara Bodhisattva" with my mouth, but at the critical moment I recited it silently in my heart, and the nightmare disappeared immediately. After experiencing this several times, I never had any nightmare again.

It is precisely because of this little incident that from now on I completely believe in the power of Avalokitesvara Bodhisattva mentioned in "The Universal Door of Avalokitesvara Bodhisattva"

The above is my personal experience. I dare not lie. For reference.