1. The second wave of mortgage defaults occurred in the United States.

Iceland refused to sign the Anglo-Dutch debt repayment bill.

It is expected that the central bank will raise interest rates this year, and the funds will begin to withdraw.

4. This round of commodity rebound since the end of 2008 is largely related to monetary factors, especially all commodities are denominated in US dollars, which will inevitably lead to more and more systematic risk accumulation, which is easy to happen. It needs to release this risk energy regularly, otherwise it needs to be adjusted more greatly.

Generally speaking, last year's economic crisis is far from over, and there will inevitably be big repeated shocks.

Secondly, from a technical point of view,

1. The continuous rise of commodities for many days needs a technical correction, and even bulls are afraid of the upward trend.

2. All varieties have encountered the key resistance areas above, and the recent increase has reached a certain key target position. It is normal and inevitable to adjust these key technical positions.

Taken together, these factors are equivalent to "the right time, the right place and the right people", and only one domino is needed to trigger a series of actions.

(Personal originality, please indicate the source)