zhè / jiān / xiǎo / wū / suī / rán / jiǎn / lòu / què / shì / tā / ān / xīn / dú / shū / de / wō / lú

这间小屋虽然简陋，却是他安心读书的蜗庐。

Although this little house is simple, it is his humble abode where he can study in peace.