Expansion against the trend: refers to expansion under adversity or unfavorable conditions. Contrarian expansion means that when faced with challenges or difficulties, we still choose to expand our scale or develop our business, which is an action taken to reverse the situation, cope with competition or seize market opportunities. Convenient expansion: expand according to market trends and favorable conditions. Convenient expansion refers to the initiative to expand the scale or enter new fields according to market demand and trends when the market environment is good and there are many business development opportunities. Contrarian expansion emphasizes bravely facing challenges in difficult times or unfavorable environments and improving the situation through expansion, while homeopathic expansion means actively choosing expansion according to market trends and opportunities in a good market environment.