At 12:07pm this huge space is almost completely empty and looking like a sad reception venue that lost its wedding party.

At 12:17, it's almost full and looking like a Hong Kong yum cha scene from a Jackie Chan movie with a cast of thousands, all eating and pointing for more as the trolleys are hauled along by patient aunties and pallid uni students.

This is the mystery of Sky Phoenix. Dawdle enough to run three minutes late and you've missed your chance; the yum cha dragons have materialised out of the local office towers and snaffled your opportunity to lunch like an emperor for $25: Too bad, no chee chong fun for you today. Try again tomorrow.