Based on the provided search results, there are several high-quality novels recommended in the modern romance genre featuring CEOs or presidents. Some of the recommended novels include "總裁在上:嬌妻萌翻天" and "萌寶來襲:總裁爹地,寵上天" for sweet and affectionate stories, "穿越現(xiàn)代:王爺么么噠" and "古代來的俏嬌妻" for novels that combine elements of ancient princes and modern CEOs, and "媽咪帶球跑:偏執(zhí)總裁心尖寵" for a story about a business genius CEO and a bankrupt heiress. However, it is important to note that the search results are limited and there may be other high-quality novels in this genre that are not mentioned.