You can consider the following ways when replying to him:
1. Let’s go and buy you a drink. It is natural for us fellow villagers to help each other. I will do my best if necessary in the future. Help you.
2. Thank you for your help. I am lucky to have a fellow like you. I hope our friendship can last forever.
3. Thank you very much for your help. This time I really benefited a lot. Fellow villagers should support each other, and I would like to ask for your advice if I have the opportunity in the future.
These replies show your gratitude to him and express your willingness to maintain a friendly relationship in the future. At the same time, these replies also reflect the quality of high emotional intelligence, that is, paying attention to maintaining interpersonal relationships and emotional communication while expressing gratitude.