China’s latest economic update has added a fresh note of bullishness to oil markets, as it showed the first expansion in manufacturing activity in six months. The purchasing managers’ index reading for March stood at 50.8, up from 49.1 for February, Reuters reported, adding that export orders increased as well. "From the indicators, domestic supply and demand has improved, while homeowner and business confidence is recovering, while willingness to consume and invest are increasing," Chinese Everbright Bank analyst Zhou Maohua told…