There are two interpretations of the idiom “日逑月相” in No.11 scripts of “Minzhifumu” in Chu Bamboo Slips of the Shanghai Museum. They are “日就月將” and “日聚月扶”. “日就月將” means to make progress every day and every month. “日聚月扶” means to gather every day and every month. These interpretations are not completely convincible. According to their shapes, syntactic structure and context, it is suggested in this article that “日逑月相” means to be compared to the sun and the moon. The second part of this paper mainly discusses the word “𣳠”. Seas were mainly written as “𣳠” instead of “海” in the characters of Chu Kingdom during the Warring States Period. When the word “海” became popular, the word “𣳠” disappeared.