The following methods can be used to solve the problem of ungluing the concave and convex world tummy doll:

You can sew it with needles and threads of the same color;

Find alcohol glue and stick it on;

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Use a toothpick to apply stronger glue to the inside;

If you particularly like it, you can find a craftsman to repair it;

The first three methods may be problematic due to your own techniques. Or you may be careless, causing your figure to lose value or be scrapped. The last method may be more expensive to repair than the price of the doll itself. Which method you choose depends on your preference. However, inexpensive things will last. One method is still not very cost-effective.

Finally, it is recommended that the doll figures should not be cleaned frequently, otherwise the doll's hair will easily become glued.