Urban youth index exposure, which cities most qualified youth day?

belongs to the young people's festival,
and QQ as the largest concentration of young people's social platform,
released the 2016 national young city index youth day,
the city young people accounted for each statistical index of light flow ratio and the young people that each city.
the report not only ranked cities but also published new rates,
outflows and net growth rates for young people in each city.
We have also been able to look at the report to see which cities are most qualified for the Youth Day First place: Shenzhen youth index: 89,
in the north,
five first tier cities,
Shenzhen is far more than the other four cities,
becoming the youngest city in the first tier cities.
QQ big data show that Shenzhen's young population increased by 47.