It's hilarious that US media and "experts" constantly talk about how deflation in China is a sign of China's economic collapse while totally forgetting about the consistent deflation that accompanied the meteoric rise of US economic and industrial power in the last third of the 19th century.
At the end of the American Civil War in 1865, the US was a relative economic and industrial backwater compared to the leading European nations. By 1900, the US had became the unquestionably dominant economic and industrial power in the World. (negative inflation is deflation) and cumulative deflation of 48.5%. The US literally deflated its way to becoming an industrial super power.
The deflation that China is experiencing now is similar to what the US saw from 1865 to 1900. Lower prices due to rapid increase in productivity and efficiency is very much a good thing for an economy.
