Strictly speaking, "you" emphasizes existence and "only" emphasizes uniqueness, which is the rigor of mathematics ... From the Chinese point of view, "only" is actually a bit ambiguous, such as "only you can understand me" ... it can imply "others don't understand me" or "others don't understand me, but you understand me" ... This is a problem of ambiguity in Chinese ... and then it is like "there is only one outside the straight line"