If you dream that your husband's eldest brother is in your own yard, it may imply the harmony of family relations and family harmony. This dream indicates positive factors in family life, which may mean that you have a good relationship with your husband and your family life is stable and happy.
But dream interpretation is subjective, and different people have different dream experiences and situations. If you have practical problems or doubts, you'd better communicate directly with your husband to understand the real situation of the relationship and solve any possible problems. Remember, Duke Zhou is only a reference, and your actions and communication in real life are the most important.