There's moderate demand for ads based on ethnic information, but the companies acknowledge that determining ethnicity is more challenging than figuring out gender and age range.

The results show that Chinese foreign exchange reserve long-term equilibrium demand and actual scale inconsistencies, margin over time constant changes, and more than a moderate scale.

Rises in core consumer prices may be moderate, but with food sending headline inflation up by 7.1 per cent in the year to January, the central bank still needs to keep the brakes on demand.