outside the house,

A thick-bodied male dragonfly,

a pair of compound eyes,

There are three single eyes in the compound eye,

Two pairs of wings, one large and one small,

There are a total of twelve abdominal segments,

The male dragonfly slowly walks towards the darker and smaller female dragonfly,

dragging the female dragonfly to fly for a while,

Place the holder of the ninth abdominal segment at the end of the body,

Firmly squeeze the female dragonfly's neck holder,

The holder is a pair of structures like a key and a lock,

The female dragonfly put her tail end,

Reach under the second abdominal segment in the middle of the male dragonfly's stomach,

Two dragonflies form a heart-like pattern,

After a stick of incense,

This unique heart-shaped position continues,

at the same time,

Just take a closer look with a magnifying glass,

You will find a silent 5 cm gray beetle above the toilet cubicle,