By Vivek Kumar A wave of optimism swept through China’s manufacturing sector in March as its activity surged to its highest level of growth in over a year, with firms resuming and accelerating production following the Lunar New Year holiday, according to an official survey. The survey also showed a remarkable boost in business confidence, hitting its peak in almost a year, driven by a surge in orders both domestically and internationally. This positive momentum comes as a breath of fresh air for Beijing, which has been grappling with a sluggish property market and fluctuating investor sentimen…