Let me dissect that story for you in simple terms.
It appears people are fearing the default of foreign debt. And where is the safe place to put money when the rest of the world is in trouble, they buy US Treasuries.
"But daddy, if they buy US treasuries, wont that mean the US is spending more?"
"Well, not always little Jonny. See, if other foreigners are anxious to buy our Treasuries, that means we don't have to rely so heavily on China to buy them. Which means we may not be as beholden to China as we used to be."
But Daddy, why are we beholden to China in the first place?"
Son, there was this little man with grand ideas of taking over the world, one desert at a time. He invaded sovereign nations, didn't have any plans to manage the costs, slashed taxes and drove up our national debt."
"But Daddy, that man is not in charge. Why is our debt still rising?"
Well son, because of the sheer incompetence of that little man and his political party, they paved the way for an inexperienced man with a teleprompter to take over as president and use all the new powers the previous little man had usurped in his presidency. And now he's spending money like mad. Of course, you have to realize son, this new man is from the Democratic party. The Dems spend money so this was expected. People must've figured that if a politician is going to spend money, he might as well be from the party that does it best."