Results from a non-governmental organization survey discovered that approximately thirty percent of the patients had also contracted hepatitis C.
Mandarin
中华民族的发展（这里说的主要地是汉族的发展），和世界上别的许多民族同样，曾经经过了若干万年的无阶级的原始公社的生活。而从原始公社崩溃，社会生活转入阶级生活那个时代开始，经过奴隶社会、封建社会，直到现在，已有了大约四千年之久。
中華民族的發展（這裏説的主要地是漢族的發展），和世界上別的許多民族同樣，曾經經過了若干萬年的無階級的原始公社的生活。而從原始公社崩潰，社會生活轉入階級生活那個時代開始，經過奴隸社會、封建社會，直到現在，已有了大約四千年之久。
zhōng huá mín zú de fā zhǎn （ zhè lǐ shuō de zhǔ yào de shì hàn zú de fā zhǎn ） ， hé shì jiè shàng bié de xǔ duō mín zú tóng yàng ， céng jīng jīng guò le ruò gān wàn nián de wú jiē jí de yuán shǐ gōng shè de shēng huó ． ér cóng yuán shǐ gōng shè bēng kuì ， shè huì shēng huó zhuǎn rù jiē jí shēng huó nà ge shí dài kāi shǐ ， jīng guò nú lì shè huì ， fēng jiàn shè huì ， zhí dào xiàn zài ， yǐ yǒu le dà yuē sì qiān nián zhī jiǔ ．
Developing along the same lines as many other nations of the world, the Chinese people (here we refer mainly to the Hans) went through many thousands of years of life in classless primitive communes. Some 4,000 years have gone by since the collapse of these primitive communes and the transition to class society, which took the form first of slave and then of feudal society.
Approximately from the 1970s, the character of Chiang Kai-shek in Mainland Chinese movies and television dramas often hurled "niang xi pi" (fuck your mother) when swearing others. Such perception created by dramatic art is well-known in the Mainland.