Marriage - No children but been pushed to have blood-line children. Solve this

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imagine ure born in old-fashioned family, who still hold their tradition of where ure the only single male successor for the blood line. then ure get married. 4 years your marriage is without kid. ur parents get worried and asked you to seek another wife to give them a bloodline grandson. Worst some of ur relative whisper to your parent to push u to divorce ur wife and made with new one. And they, did not accept adoption which is not their bloodline. You already face dilemma of having no kid, now you face the pressure from your old-fashioned your older to has a bloodline generation. How do you solve this?