The core turtle can lay 3-15 eggs in a year. Generally speaking, they can lay 1-5 eggs three times a year, so they can lay 3-15 eggs in a year. But this is the approximate data. How many pieces can be produced depends on their size and fertilization. If female turtles are small, they don't lay too many eggs because they can't develop too many eggs in their bodies. In addition, the poor quality of sperm in many male turtles will lead to poor fertilization, so the number of eggs laid will be very small. Even if female turtles can lay more eggs, weak eggs will appear.

The mating time of stone turtles is not fixed, and they can mate all year round, because female turtles can store semen in their bodies for at least 379 days. But they usually start laying eggs from April to June every year. Their eggs are oval white and fragile. Like most turtles, they also lay eggs on the shore.

After the core turtle lays its eggs, the breeder can put them in a dry place and wait for a few days. Then illuminate the eggs with a flashlight to see if there are sperm spots. If there are, they can hatch.

When hatching, vermiculite can be spread into the incubator, and the height can be controlled at about 3-5 cm. Then keep the temperature at 25 ℃ and wait for them to hatch. They can hatch successfully in about 4-5 months.