The significance of the wine barrels illustrating this Chinese government newsagency tweet on China’s falling growth rates escapes me but the story it points to might drive some iron ore producers to drink. BEIJING, Jan. 20 (Xinhua) — China’s economy grew 7.4 percent in 2014, in line with market expectations and registering the weakest expansion in 24 years, the National Bureau of Statistics (NBS) said Tuesday. The reading was slightly below the government target of around 7.5 percent for the year, as authorities are at pains to transform the economy onto a more sustainable track while tackling a housing slowdown, softening domestic demand and weak global recovery. Last year, the country’s gross domestic product reached 63.65 trillion yuan (10.4 trillion U.S. dollars). Growth in the fourth quarter came in at 7.3 percent, flat with the rate seen in the third. “The economy is maintaining steady operation under the new normal, with positive trends of stable growth, ...