The problem of support obligation after immigration

I can't major because the conditions given by the topic are insufficient.

As far as the existing conditions are concerned, the following situations may occur:

1. If the parents file a lawsuit in China, but the children do not raise any objection after learning it, even if they are not of China nationality and live abroad, the China court shall be deemed to have jurisdiction according to the principle of responding.

2. In the case that the courts in our country have jurisdiction, we have to use conflict laws in state and private affairs, but the topic does not give how the children's countries stipulate conflict laws, so we can't analyze them further.

3. If the parents sue in China and the children ignore it when they learn about it, the China court cannot obtain jurisdiction.

4. If parents sue abroad and have no obligation to support according to local laws, they will lose the case.