The secret guard couldn't tell what this thing was, but the head of the Imperial Medical Service who was entrusted by Zhao Ji could naturally tell what this thing was.

"This is the Five Stones Powder!"

The head of the Imperial Medical Bureau spoke to Zhao Ji.

Although Zhao Ji had expected this, he still felt a little nervous when he actually heard it.

You should know that poppy husks cannot grow in the Central Plains. They only grow in the valleys at the junction of southern Xinjiang and the Central Plains.

If Master Zhang can get the poppy shell, the raw material of Wu Shi San, then it means that the line behind Master Zhang is definitely related to southern Xinjiang.

If it is related to Southern Xinjiang, then Southern Xinjiang's infiltration into the Celestial Empire is too much.

First, there was the third prince, there were traces of people from southern Xinjiang.

Next is Mingyue, and there are also signs of people from southern Xinjiang intervening here.

Even now, even a Master Zhang who inexplicably emerged from the mountains seems to have a connection with southern Xinjiang.

Nanjiang's action was obviously too much.

Zhao Ji felt that something must have happened in Southern Xinjiang, so Southern Xinjiang, which had never had any ambitions towards the Central Plains before, was now making a lot of moves in the Celestial Empire.

"If it is confirmed to be Wu Shi San, is there any way to replace this powder with another powder with a similar appearance?"

Zhao Ji just started it, and the head of the Imperial Medical Bureau understood what he meant.

Obviously, this kind of thing becomes familiar after a second try, and now the head of the Imperial Medical Bureau is very familiar with the substitution.

"Leave it to me. It's very simple to make a medicinal powder with a similar appearance. I just don't know if Master Zhang will eat it himself..."

Zhao Ji also understood the meaning of what the head of the Imperial Medical Bureau said.

If Master Zhang also eats this thing himself, then there is not much point in switching the medicine, because as long as Master Zhang takes it himself, he will find that this medicine powder is definitely not Wu Shi San.

But if Master Zhang himself didn't eat it, and he brought it purely for the emperor to eat, then this matter would not be discovered for a while. After all, isn't the emperor taking the medicine that was replaced now?

Time was really running out, and the magpies that were caught by the secret guards were about to flap their wings and fly into the sky again.

Generally speaking, most messengers are pigeons. When magpies suddenly appear, it will be difficult to find a replacement for them in a short time.

After all, no one would train if they had nothing to do, so the magpie acted as a messenger.

Well, if we don't want to alert the enemy, we must use these magpies to apply the powder, so time is very tight.

Zhao Ji sighed and said, "At this moment, it seems that we can only take a gamble. If the gamble is right, then everyone will be happy. If the gamble is wrong, even Master Zhang dare not tell the truth of the matter!"

The head of the Imperial Medical Bureau nodded, and after a while, he took out some gray powder of similar color from the pharmacy of the Imperial Medical Bureau.

Carefully put all the powder into the tubes, and then carefully tie all the tubes to the magpie's body.

Then the secret guard reached out and released all the magpies that had just woken up.

But the next moment, the secret guard himself disappeared, and it was obvious that he was trying to find the direction where the magpie disappeared and chased after it.

Zhao Ji knew very well that the only place Xi Que could go was the gym, but the secret guards did not know that.

Zhao Ji felt that letting these secret guards find out the situation was much better than having them stay by his side and provide useless protection.

The magpie felt a little dizzy when it first woke up, but after circling over the palace for a few times, it finally figured out the direction.

Sure enough, just as Zhao Ji had guessed, it flew straight towards the Taoist temple.

In fact, Master Zhang is quite smart. After all, no one would pay attention to a bird of good fortune like the magpie.

People’s first reaction when seeing a magpie is happiness, after all, magpies represent good news.

Being happy to see a magpie does not mean that you will look at the magpie carefully.

Because what those people actually see is just a symbol represented by the magpie.

Master Zhang took advantage of the fact that it was dark under the lamp, so he was able to use the magpie to deliver things repeatedly.

Now that Zhao Ji and the others have discovered this obscure path, Master Zhang has one less trump card.

As expected, the magpie fell into Master Zhang's Taoist temple. The secret guards hiding in the dark discovered that it was not Master Zhang who came out to take the magpie, but the little boy in the Taoist temple.

The little boy took out a cage with ease. As soon as he opened the cage, the magpie rushed into the cage to eat the rice grains.

While the magpie was eating, the little boy quickly connected several small tubes.

Then he put the small tubes in his arms and went to Master Zhang's alchemy room.

At this time, Master Zhang was not in the Taoist temple, and the secret guards did not find any trace of Master Zhang.

"I saw Master Zhang with my own eyes. He did not leave the room. There was no trace of Master Zhang in the entire palace, nor in the Taoist temple... It was as if this person suddenly disappeared out of thin air!"

The secret guard came back to report the situation.

Zhao Ji stood up when he heard this and asked, "What did you say? You mean Master Zhang disappeared out of thin air and now there is only a little boy in the Taoist temple?"

The secret guard nodded.

"That's true. I even went to search the Taoist temple while the little boy was away, and there was indeed no trace of Master Zhang!"

Zhao Ji could no longer sit still. Zhang Zhenren, such a living person, suddenly disappeared in the palace. This was a big deal.

Not to mention how to explain it if the emperor asks, this matter alone reveals something strange.

How could someone in this world disappear out of thin air?

"Have you carefully checked the walls, floors, and bookshelves inside the Taoist temple to see if there might be secret passages?"

Zhao Ji asked anxiously.

The secret guards sent out this time are actually the best at tracking and hiding.

He could be considered an expert in this kind of mechanism, but now even an expert like him could not find any flaws.

That can only mean that either Master Zhang's arrangements are very meticulous and the mechanism is concealed enough.

Otherwise, it means that Master Zhang is really gone, or at least he is not in the Taoist temple.

"Don't let the news leak out. Take a few teams and search the palace carefully. Pretend to be guards and don't reveal any clues!"

At this moment, we certainly cannot announce in a loud and clear voice that Master Zhang is missing and we need to look for him.

The only way to find it is to use euphemistic methods.