After preparing the ox heart grass and auxiliary herbs, the pot over there was also heated up. Song Yun put the ox heart grass and auxiliary herbs into the pot and roasted them, stirring them constantly like frying tea.

The firepower also needs to be controlled, otherwise it will easily burn.

After roasting for two hours, the herbs were dry and could be crushed into powder with a light touch of fingers.

Song Yun ordered the fire to be turned off, and she continued to stir-fry. When the temperature of the pot gradually dropped and the herbs reached their crispest point, she immediately crushed all the herbs into powder and put them in a cloth bag.

The next step is to conduct experiments.

She took out two masks, sprinkled medicine powder in the middle of the two masks, and then sewed them together with needle and thread. After putting on the masks, a very special smell rushed into her nose.

"You guys wait here, I'll go in and try."

Wei Changqing's expression changed. "Is this true?"

Song Yun said, "You'll know after you try it. Don't worry, I'll try it next to you. If I feel something is wrong, I'll withdraw immediately."

Wei Changqing wanted to say something else, but when he thought about how they had gained nothing in all these days and had nothing to do but wait, with no progress at all, he shut up.

Some people also suggested going in and trying it with Song Yun.

Song Yun chose two people to try with her. After all, there were more than just Qi Mo Nan to be rescued. There were more than a dozen people in total. It would be difficult for her to accomplish this task by herself, so she needed reliable teammates.

Song Yun made two more masks and asked the two men to wear them, then she walked towards the poisonous forest with a flashlight.

The two comrades followed without hesitation.

The people outside looked anxious, their eyes fixed on their backs, watching them walk into the poisonous forest and be swallowed by the large gray fog.

Song Yun really didn't plan to go deeper. Her purpose was to test the Niu Xinxiang, so there was no need to go too deep. She stopped after about ten meters.

"Hey, I really don't feel dizzy." Xu Mancang had been here before. He felt dizzy and light-legged as soon as he inhaled the poisonous mist. Fortunately, he turned around in the right direction and stumbled out. He fell on the grass outside and was unconscious for an hour. He was fine when he woke up.

But now, he had been in for three minutes and didn't feel dizzy at all.

Song Yun tried to walk forward a few dozen meters. The further she went, the thicker the poisonous fog became. She didn't feel dizzy, but she did feel a little uncomfortable.

It seems that cow heart grass is useful, but this amount is not enough. We need to increase the amount to conduct a deeper exploration.

She gestured to Xu Mancang and Zhou Zhi, indicating that they should follow.

The three of them walked out of the poisonous forest safely.

The comrades who were waiting outside and were anxious to rush in to rescue them cheered when they saw them come out safely.

Song Yun counted the number of people in the room. There were thirteen of them. She needed to bring at least fifteen people in. The beef heart incense she had on hand was obviously not enough.

"Continue to gather the ox heart grass. The rest of you come with me to gather the auxiliary herbs."

After having this experience, everyone can do things more easily.

Everyone cooperated with Song Yun, and at three o'clock in the morning, the first pot of beef heart incense was successfully served.

The amount this time is more than double that of last time.