Sales is a very fulfilling profession. If you want to make great progress in your career, it is a good choice. Besides, Langjiu is a well-known brand in China, and also a high-grade consumer product. It won't be that difficult to sell. In a word, my tutor attaches great importance to Langjiu and thinks that Langjiu will develop faster in the future.
Having said that, I hope I can give some useful suggestions to the landlord.