1. When a man in Northeast China says "you're a little girl", it doesn't necessarily mean he likes you directly. This expression may have multiple meanings in Northeast dialects, such as intimacy, teasing, and joking.
2. "Your little one" is usually used in relaxed and casual situations, which may indicate that the other person has a certain degree of closeness in your heart, but it does not necessarily equate to love or liking.
To determine whether a man from Northeast China expresses a liking for someone by saying 'you little girl', it is necessary to analyze the specific context, tone, and relationship between the two parties comprehensively.