Daily Chinese Idiom Guessing Game
Half of the country or territory, often referring to a significant portion of a realm or domain.
半壁半边；江山比喻国家疆土。指在敌人入侵后残存或丧失的部分国土。
清·蒋士诠《冬青树·提纲》半壁江山，比五季朝廷尤小。”
The tech startup now commands half the market, a true half of the industry.