The yuan's official exchange rate has risen to its highest-level in more than two years. China's central bank lifted its official yuan midpoint to 6.3267 per dollar. That's 169 basis points higher than last fix and the seventh straight increase. The yuan's has been rallying since the beginning of new year, rising more than 3 percent against the greenback. The yuan's strengthening reflects upbeat economic data released recently and broad dollar weakness in global markets.