most successful management of Reserves is done by Singapore. They did exactly what was proposed in the article, that is to invest in local infrastructure. Singapore is also doing it only in the last 5 years.
China is having close to 1 Trillion invested in US treasuries. (look from USA's point of view, USA would love it when some one accepts their IOU!)
China already indicated that they made big mistake of parking every thing in US treasuries. Because of all the su*kers who are buying US treasuries, USA is able to maintain its extravagant life style. US treasuries are nothing but USA's IOU. No wonder USA is not afraid of running deficit.