Yùnyíngshāng miǎnfèi gěi zhuāng le guāngmāo hé lùyóuqì.
The ISP installed an optical modem and a router for free.
Tips
memory
猫 'cat' is the Chinese borrowing of English 'modem' — early dial-up modems were called 猫 (homophone-style), and that name carried over to fiber: 光 'light/optical' + 猫 'modem' = 'optical modem'.
