The government dispatched troops into the mountains to encircle and suppress those crows.
However, the crows had wings, were adept at flying, and extremely cunning. With slightest rustling of leaves, the sentry crows would immediately fly off and could not be caught at all.
The crackdown by the soldiers in the mountains naturally came to nothing.
Later, the government sent skilled archers into the mountains to shoot down the crows. This time, they achieved some success.
But it angered the bird demons among the crows, which spat out green flames. Anyone touched by it would immediately drop dead.
What was strange was that the slain archers' bodies were intact, showing no signs of damage.
The green flames did not burn the mountains, trees, or clothes, but anyone touched by them would instantly die.
Only after consulting knowledgeable cultivators did they learn that the green flames spewed by those crow demons was nether flame.
Which burns a person's soul.