九连环

cháng shì xiě zuò jiù xiàng pīn còu zhōng guó de qī qiǎo bǎn hé jiǔ lián huán yī yàng kùn nan

尝试写作就像拼凑中国的七巧板和九连环一样困难。

Trying to write is difficult as much as trying to play a seven-piece puzzle and nine interlocking together.