自是

tā men jiǔ bié chóng féng zì shì gāo xìng

他们久别重逢，自是高兴。

It was of course a delight for them to meet again after such a long separation.

tā píng rì hěn zì shì yòu jué jiàng

他平日很自是，又倔强。

He is always very opinionated and stubborn.

guāi pì zì shì huǐ wù bì duō

乖僻自是，悔悟必多。

Needless to say eccentric, repentance must be more.