一、yī

一日：yī rì (one day)

一路：yī lù (all the way)

一心：yī xīn (wholeheartedly)

二、èr

二话不说：èr huà bù shuō (without hesitation)

二心二意：èr xīn èr yì (in two minds)

二氧化碳：èr yǎng huà tàn (carbon dioxide)

三、sān

三心二意：sān xīn èr yì (in three minds)

三不管：sān bù guǎn (turn a blind eye)

三角恋：sān jiǎo liàn (love triangle)

四、sì

四月份：sì yuè fèn (April)

四面楚歌：sì miàn chǔ gē (isolated and surrounded by enemies)

四通八达：sì tōng bā dá (accessible in all directions)

五、wǔ

五颜六色：wǔ yán liù sè (colorful)

五湖四海：wǔ hú sì hǎi (all over the world)

五里雾中：wǔ lǐ wù zhōng (completely confused)

六、liù

六亲不认：liù qīn bù rèn (ungrateful)

六神无主：liù shén wú zhǔ (at a loss)

六道轮回：liù dào lún huí (six reincarnations)

七、qī

七上八下：qī shàng bā xià (nervous)

七嘴八舌：qī zuǐ bā shé (everyone talking at once)

七七八八：qī qī bā bā (almost all)

八、bā

八面玲珑：bā miàn líng lóng (skillful and diplomatic)

八仙过海：bā xiān guò hǎi (each using their own special skills)

八字没一撇：bā zì méi yī piě (not even started)

九、jiǔ

九九归一：jiǔ jiǔ guī yī (repeatedly)

九牛二虎之力：jiǔ niú èr hǔ zhī lì (tremendous strength)

九死一生：jiǔ sǐ yī shēng (narrow escape)

十、shí

十年寒窗：shí nián hán chuāng (studying hard for ten years)

十全十美：shí quán shí měi (perfect)

十拿九稳：shí ná jiǔ wěn (almost certain)