As a rule, a sentence should flow from subject to verb to object, without lengthy detours along the way. When a long adverbial word group separates a subject from its verb, a verb from its object, or a helping verb from its main verb, the result is often awkward.

There is no reason to separate the subject, Hong Kong, from the verb, was transferred, with a long phrase.

There is no reason to separate the verb, discusses, from its object, fascination, with two prepositional phrases.