Zǐwǎngyǎnmǎ xiě cuò le, suǒyǐ júyùwǎng lián bú shàng.
The subnet mask was written wrong, so the LAN won't connect.
Tips
memory
掩码 literally = 'cover code / mask code'. 掩 appears in 掩护 (to cover/shield) and 掩饰 (to cover up). The subnet mask 'covers' which bits of an IP are the network part.
