It should be based on your own hobbies. Language is just a tool, and only when it is combined with specific disciplines can it play its greatest role.
According to the needs of the present society, it is better to say economic Spanish or trade Spanish. Because we have little cooperation with Spanish-speaking countries, the cooperation between any countries is based on interests, so it will be very popular to learn Spanish trade in the next time. As for other things, such as culture, with the frequent economic exchanges in Chengdu, people will pay attention to it, so we should know something about it, so it will look authentic when translated.
I learn English by myself, and Spanish is the second language. When I meet people who can't speak English in Latin America, I will use Spanish. I feel that Latin American money is easier to earn, and the quality of the products they require is far less than that of European countries.
So, landlord, come on!