Complex sentence: Unable to seek a new breakthrough, he hears about the rumour and becomes obsessed with the idea, even going to extreme lengths by opening seeking Yip and Kwai, both of whom are living in seclusion.
Split into simpler sentences: Unable to seek a new breakthrough, he hears about the rumor and becomes interested in the idea. As he becomes obsessed with the idea, he even goes to extreme lengths by inviting Yip and Kwai, both of whom are living in seclusion.