After the flock of sparrows and pigeons in the manor ate up the wheat that Zhang Tie had spread over the grass, they had flown off by flapping their wings. After flying around the garden for a short while, they flew out of the high walls of the manor towards afar...
Pigeons could reach high as they rushed into the sky in the blink of an eye. The flock of sparrows flew away while tweeting. Among those sparrows, some very strong and young sparrows flew towards the emperor's imperial city.
As there were too many birds in Xuanyuan Hill, nobody would pay attention to the movements of some sparrows and pigeons.
...
When the flock of birds flew off the manor, Zhang Tie and Bai Suxian had just left the manor by a black limo.