Joining BD American Modern Underwear has a good profit, and it can be returned in six months. The profit forecast is as follows:

Open a 50㎡ store in a first-tier city, with an annual net profit of about 405,600 yuan.

Open a 50㎡ store in a second-tier city, with an annual net profit of about 373,200 yuan.

Open a 50㎡ store in a third-tier city, with an annual net profit of about 344,400 yuan.