The semantic meaning of Ee network is "er er", which is generally used in the network to be surprised or confused about something. It is written in pinyin of "er", so it is only represented by e, and ee is used together to indicate that it cannot respond to things.

Ee also stands for organic chemistry, which means enantiomeric excess, that is, in chiral synthesis, the percentage of the target product (specific stereoisomer) minus the percentage of the by-product another isomer.