Why would governments sell bonds when the economy is in recovery? China confident of meeting 2020 fiscal targets, CGTN, 7 August 2020.

The article states that China is selling &quot;special government bonds&quot;.

Why do this? Especially when economy is just recovering?

What is the direct effect on the economy, both in the short and long terms?
The article pretty much answers this:

China has issued 100 billion yuan (about 14.1 billion U.S. dollars) of special government bonds for COVID-19 control measures in a bid to support local infrastructure construction and epidemic prevention and control, the senior official added.
It is set to counter the downward pressure on economic growth, expand tax and fee reduction policies to help enterprises tide over hard times, and strengthen budget balance to mitigate the adverse impact of the epidemic on fiscal revenue growth.

Even if the economy is doing better, it is expected to otherwise be below their growth targets.
(If you have a more specific question, you should re-phrase your question accordingly. If you want to find someone with expertise on Chinese government policy making (not me!), I am unsure how many read this website.)