You can try local fitness, or shape up, and deliberately exercise these two parts with dumbbells or other fitness equipment.
However, if you care about muscles, it will be a bit troublesome, because anaerobic equipment exercise can be used locally, but aerobic fat consumption (such as running, mountain climbing and swimming) is difficult to achieve the purpose of partial weight loss.
Although I am very bloated, especially in my stomach, there is really no fat on my shoulders and back.