Ecclesiastes 1:13

我专心用智慧寻求、查究天下所做的一切事，乃知 神叫世人所经练的是极重的劳苦。

wǒ zhuān xīn yòng zhì huì xún qiú 、 chá jiū tiān xià suǒ zuò de yí qiè shì ， nǎi zhī shén jiào shì rén suǒ jīng liàn de shì jí zhòng de láo kǔ 。

I applied my heart to seek and to search out by wisdom concerning all that is done under the sky. It is a heavy burden that God has given to the sons of men to be afflicted with.