云云

tā lái xìn shuō dú le bù shǎo xīn shū hěn yǒu xīn dé yún yún

她来信说读了不少新书，很有心得云云。

She wrote to say that she had read many new books and learned a lot in the process, and so on.

jù shuō wèn tí bù jiǎn dān yún yún

据说问题不简单云云。

It is reported that the problem is not simple and so on.