In former days

[keannu]

[FONT=&#48148]Recently, the weather of Korea has changed a lot. In former days, yellow dust flew from the Mongolian desert in spring, but now, polluted fine dust blows/flies/comes from China from winter to spring.[/FONT]


Are the underlined correct?

 

[Tarheel]

Try:

but now, dust blows in from China from winter to spring.

 

[teechar]

from China from winter to spring.

It's not very elegant to repeat "from" like that. Try "... from China winter through/and spring".

 

[tedmc]

I prefer "previously" to "in former days".