He never let go. He just felt that he had to let go occasionally so that the kite would always be held in his hand. However, he did not expect that the wind outside was too strong and the string would break if it was too thin, causing the kite to fly away.
Just like the "evil dragon" guarding his treasure, he will kill anyone who wants to covet it. His love is very overbearing and coercive, because the "light" he finally found cannot be extinguished.
Intention: People who don't understand love will slowly understand the true meaning of love with time and love.