Flying kites
Spring Equinox is a good time to fly kites. In ancient times, people did not have good medical resources. So to pray for health, they wrote their medical issues on paper kite. When the kite was in the air, people would cut off the string to let the paper kite float away, symbolizing the flying away of diseases.
Later flying kites developed into a popular game of spring. On the Spring Equinox, people write a blessing on the kite, hoping that the gods in the sky would see it.