The conjunctions of purpose 为的是 and 以便
The conjunctions 为的是 
and 以便 have the same meaning "in order to", "so that". They indicate the purpose of an action.
The action is placed before 为的是 and 以便. The purpose of the action is placed after 为的是 and 以便.
They are often used to connect the parts of a compound sentence.
and 以便 have the same meaning "in order to", "so that". They indicate the purpose of an action.
The action is placed before 为的是 and 以便. The purpose of the action is placed after 为的是 and 以便.
They are often used to connect the parts of a compound sentence. Pay attention
以便 is most commonly used in written language.
Scheme
action
为的是/以便
purpose
what for?
Examples
我常常早起，为的是看日出
I often get up early to watch the sunrise
wǒ chángcháng zǎoqǐ, wèideshì kàn rìchū
他每天跑步十公里，以便保持健康
He runs ten kilometers a day to keep fit
tā měi tiān zǎoshang pǎobù shí gōnglǐ, yǐbiàn bǎochí jiànkāng
我真不明白，他的这个行为，为的是什么？
I really don't understand why he did it
wǒ zhēn bù míngbai, tā de zhè ge xíngwéi, wèi de shì shénme
她女扮男装以便能上战场打仗
She disguised herself as a man to go to war
tā nǚ bàn nánzhuāng yǐbiàn néng shàng zhànchǎng dǎzhàng
以便 can be shortened to 以.
Examples
老师采用新的教学方法上课，以调动学生的积极性
Teachers use new teaching methods during lessons to motivate students
lǎoshī cǎiyòng xīn de jiàoxué fāngfǎ shàngkè, yǐ diàodòng xuéshēng de jījíxìng