The Chinese word "深信" is a compound verb formed by combining the adjective "深" (shēn, meaning "deep") with the verb "信" (xìn, meaning "to believe" or "to trust"). It follows a common grammatical structure in Chinese where an adverb (in this case, an adjective acting adverbially) modifies a verb to create a more specific meaning. Thus, "深信" literally translates to "deeply believe" and conveys a sense of firm conviction or wholehearted trust in something or someone.