The farmers went to sue the Lord Buddha that the monks damaged their rice sprouts, why the monks did not stay in the temples during the rainy season like birds.
To solve this problem, the Lord Buddha determined that the monks had to stay in the temples during the rainy season, from the first waning moon day of the 8th Lunar month to the 15th waxing moon day of the 11th Lunar month, called the Buddhist Lent. So, the monks have not gone anywhere to practice meditation or to teach anyone. If someone wants to listen to the sermon, he/she has to go to the temple