Reads literally as 'rub-sky big-building.'
摩天 (mótiān) 'rub-the-sky' is the old Chinese rendering of skyscrapers' altitude — the same image English uses, just with rubbing instead of scraping. You'll see
摩天 in
摩天轮 (mótiānlún, 'Ferris wheel,' literally 'sky-rubbing wheel').
