why do the yield of long term treasuries rise when the fed starting bumping liquidity to the market?

why do the yield of long term treasuries rise when the fed starting bumping liquidity to the market?
People worry about too much money floating around and causes inflation.

When market tanked, folks worried about deflation/recession and started buying up treasuries as protection so yield fell.

I am just an amateur trader so don't take my logics/answers seriously, it is a WAG.
 
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