Note the tone:
兴 is read xìng (4th tone) here, not xīng (1st tone). When
兴 means 'mood/interest,' it's 4th tone (
兴趣 xìngqù,
兴高采烈 xìnggāo-cǎiliè). When it means 'to rise/prosper,' it's 1st tone (
兴起 xīngqǐ,
高兴 gāoxìng is an exception — the
兴 there is also 4th tone).