At a rough estimate, there are ten thousand people.
Examples (Wiktionary)
Mandarin
我实实在在地告诉你们，一粒麦子不落在地里死了，仍旧是一粒；若是死了，就结出许多子粒来。
我實實在在地告訴你們，一粒麥子不落在地裏死了，仍舊是一粒；若是死了，就結出許多子粒來。
wǒ shí shí zài zài de gào su nǐ men ， yī lì mài zi bù luò zài dì li sǐ le ， réng jiù shì yī lì ； ruò shì sǐ le ， jiù jié chū xǔ duō zǐ lì lái ．
Verily, verily, I say unto you, Except a grain of wheat fall into the earth and die, it abideth by itself alone; but if it die, it beareth much fruit.
Mandarin
你要老老实实讲给我听。
你要老老實實講給我聽。
nǐ yào lǎo lǎo shí shí jiǎng gěi wǒ tīng ．
You need to tell me the truth.
Mandarin
我们必须向一切内行的人们（不管什么人）学经济工作。拜他们做老师，恭恭敬敬地学，老老实实地学。
我們必須向一切內行的人們（不管什麼人）學經濟工作。拜他們做老師，恭恭敬敬地學，老老實實地學。
wǒ men bì xū xiàng yī qiè nèi xíng de rén men （ bù guǎn shén me rén ） xué jīng jì gōng zuò ． bài tā men zuò lǎo shī ， gōng gōng jìng jìng de xué ， lǎo lǎo shí shí de xué ．
We must learn to do economic work from all who know how, no matter who they are. We must esteem them as teachers, learning from them respectfully and conscientiously.