BEIJING, Jan. 22 (Xinhua) -- Barack Obama, a personable middle-aged man, inaugurated as the first African-American president of the United States four years ago with an ambitious oath -- "Yes, we can."
However, when Obama swore in for a second term as the country's top leader on Monday, a man with eyebags, black spots and white hair stepped on the stage.
Over the past four years, Americans witnessed all of Obama's ups and downs, which obviously catalyzed his aging.
When Obama announced the death of Osama Bin Laden, who was wanted by Washington as the "prime suspect" behind the Sept. 11 terrorist attacks, the serious look could barely hide his joy inside.
He was angered by the ideas of the Republican to avert the "fiscal cliff", a combination of tax hikes and spending cuts which would have begun to take effect on Jan. 1.
Meanwhile, tears rolled down his cheeks for several times when a school mass shooting in Connecticut on Dec. 14 killed at least 28 people, including 20 children.
Moreover, Obama has suffered much scorn over the years for his insistence on keeping taxes from rising on the middle class, levying more taxes on the wealthy and the launch of Obamacare.
Apparently, sad moments overwhelmed happy ones in Obama's first term, as the number of things he can't do is far beyond those he can. Even his own doctor admitted that President Obama now looks eight years older than four years ago.
Whether the next four years could be easier for him remains a mystery, but it is for sure that Obama, buried in unstopping affairs at home and abroad, could never be any younger.