挑礼

verb

to take offense at a breach of etiquette; to be overly critical of protocol; to find fault with manners

Commonly used in contexts of weddings, family gatherings, and social etiquette. Often appears with the 'er' suffix as 挑理儿. A variant form 挑礼 (using 礼 'etiquette' instead of 理) is also encountered in spoken language.