I feel their projection for Q2-Q4 is kind of low. Last year's qarterly GDP growth rates are quite low: -6.6%, 3.2%, 4.9%, 6.5% for Q1 to Q4 respectively. Other than Q4, all other quarters were all well below normal. So this year's growth rates will benefit from last year's low base. Secondly, the world economy, especially the US's (fueled by debt and deficit), will bounce back strongly in the second half. As the world's largest exporter, China will benefit from the recovery of global economy.
But we're still in Q1, we shall see.