Why do so many people go to temples in June 19 of the lunar calendar? /kloc-what is the special day in June of 0/9?

Enlightenment Day of Guanyin Bodhisattva

June 19th of the lunar calendar is an important anniversary of Buddhism-Avalokitesvara Enlightenment Day. Buddha Guanyin bodhisattva

Religion believes that chanting Buddha, chanting scriptures, holding spells and releasing people on this day is still a great victory and great merit. Why is June 19 designated as the enlightenment day of avalokitesvara? This is a long-standing folk saying, which evolved. Legend has it that a long time ago, there was a princess Miaoshan. Later, on June 19th, Princess Miaoshan became a monk and became a Taoist. Now she has thousands of hands and eyes, so later generations designated this day as the enlightenment day of Guanyin Bodhisattva. Cai Jing, a great teacher in the Song Dynasty, wrote a monument to the achievement of the Great Mercy Guanyin Bodhisattva. The inscription says: Princess Miaoshan repaired pottery here in Xiangshan, and the relics of Princess Miaoshan were buried under the Great Pessimism Tower rebuilt in the first year of Xining in the Northern Song Dynasty (1068). "Great Compassion Tower" is a solid and majestic octagonal nine-story brick tower with dense eaves, which is still intact.