Which pair of nct salts are they?

Because Luo's pronunciation in Korean is na, and its abbreviation is cl, which together is nacl, and nacl is chemically sodium chloride, which is what people call salt.

Cp in Luo Min and Zhisheng Piao is a bunk bed. Nana and Xinxin shared a dormitory before, and they were bunk beds. So we call it cp shop.