wèi le / dì èr tiān / zǎo qǐ / tā / bú zài / shè / nào zhōng / dǎ suàn / ràng / zì jǐ / zì rán xǐng

为了第二天早起，他不再设闹钟，打算让自己自然醒。

Because he wants to get up early the next day, he no longer sets an alarm and plans to wake up naturally.