你是中国好姐妹我是中国好伙伴
[nĭ shì zhōng guó hăo jiĕ mèi wŏ shì zhōng guó hăo huŏ bàn]
This internet nickname expresses a close friendship. The user may be referring to someone with whom they share a strong bond, like a sister or friend. They want to emphasize the closeness and trustworthiness of their relationship.