In the dull voice, there is a low and steady sound of iron and copper.

Xuanyuan Qian used his spiritual power to probe the thickness of this door, and the corners of his mouth twitched, these two doors were so thick that there were three pieces of the Great Wall City Drill stacked horizontally!

No wonder Little Chiang Mai can't push these two doors open with such strange force!

"This door is made of the hardest and heaviest iron and copper, and the four of us can't open them alone."

Xuanyuan Qian's heart was a little heavy, but he still encouraged on his face: "But judging from the iron cables, palace walls and labyrinths in front, this room should contain mysteries, and we still have a chance to go out." ”

But these words could not reassure Xuanyuan Shun and Qi Yuyi.

If the water were to go up, they would be drowned in this room!

But, unexpectedly, the cold water only rose to their knees and stopped gushing up, but for little Chiang Mai, the water still soaked into his thighs.

When Xuanyuan Qian wanted to pick up Xiao Qingmai, Xuanyuan Shun ran up Xiao Qingmai one step ahead of her.

"Thank you, Brother Shun." Little Chiang Mai thanked him politely and politely.

Xuanyuan Shun pursed his lips and just nodded.

"Smack-"

Suddenly, a sound caught the attention of Xuanyuan Qian and the others.

Following the prestige, I saw a scroll floating on the water.

"Wait here, I'll take a look." Xuanyuan shallow struggled in the water, picked up the scroll, spread it out, and saw a question written on it.

-- Find out the palace in the pentatonic tone.

Find?

Xuanyuan Qian handed the scroll to Xuanyuan Shun and Qi Yuyi to look at.

Xuanyuan Shun thought thoughtfully, "Do you guess there is a clue on this scroll to let us out?" ”

"Then let's try it."

Imminent. They had to try by all means.

"And how do we find it?" For the five tones and six rhythms, Qi Yuyi is a Xiaobai who doesn't understand it at all, this. The same is true for Little Chiang Mai.

"Knock on the wall!" Xuanyuan Qian and Xuanyuan Shun thought of this almost at the same time.

Outside, both the carved palace walls and the labyrinthine walls are made of ordinary stone, but here they are made of the hardest iron and copper.

Most of the musical instruments in ancient times were made of iron and copper.

Connecting with the content on the scroll, it is not difficult to imagine that they are trying to knock on the wall in order to find the location of the "palace" scale!

"But I won't listen......" Qi Yuyi suddenly made a bitter face.

She has different rhythms, only the high and low tones can be distinguished, and the rest is the left ear in and the right ear out......

"Then we're going to split up. Little Chiang Mai follows me, you follow Xuanyuan Shun. Xuanyuan suggested.

Xuanyuan Shun shook his head and said, "It's better for this king to hold the little monk." You take her with you. ”

"It's fine." Xuanyuan didn't think much about it, pulled Qi Yuyi and left.

"Tuk-"

"Tuk-tuk—"

"Tuk Tuk—"

Xuanyuan Qian and Xuanyuan Shun began to knock on the wall in two ways, although they accidentally found the other four, but they didn't find anything.

Qi Yuyi and Xiao Qingmai didn't dare to make a sound, for fear of affecting Xuanyuan Qian and Xuanyuan Shun's ears.

"Tuk-tuk—"

Suddenly. A sound sounded. The tips of Xiao Chiang Mai's ears moved.

"Wait." He spoke suddenly.

Xuanyuan Shun was stunned and puzzled, "What's wrong?" ”

"The sound of your banging on the wall seems to have changed a little." Xiao Chiang Mai frowned, with a tangled and thoughtful expression. Because the sound was so similar to the other percussion sounds, he was a little unsure.

But Xuanyuan Shun's eyes lit up, "That king is knocking once." ”

Luckily, he remembered every time he struck it, and he took a step back and knocked on it again.

"Tuk-"

"This is it. It seems a little different. Xiao Qingmai pursed her lips and said a little awkwardly: "Brother Shun, let me down." I can hear it a little more clearly below. ”

The higher it is, the farther the sound will be, and it will reverberate differently in a room made of iron and copper.

Xuanyuan Shun nodded, and put him down, only to find that the water level had quietly risen!

Xiao Chiang Mai fell to the ground, and he actually directly spread his little PP, faintly rising to his waist!

"Oh no, the water is just slowing down!" Xuanyuan Shun's face was a little ugly.

Because the four of them were so focused on finding the sound, they didn't notice the water level rising at all!

"It's time to hurry!" A heaviness also flashed on Xuanyuan's face, and he listened more attentively.

"Tuk-tuk-tuk-"

Xiao Qingmai reached out to knock on the place where Xuanyuan Shun had just tapped, and sure enough, he found a difference, he tried to knock down continuously, and a series of sounds suddenly came into the ears of the four people.

"It's it!" Xuanyuan Qian and Xuanyuan Shun immediately said in surprise!

"Huh? Seems to be able to press? Xiao Chiang Mai subconsciously pressed it.

Suddenly, several large holes opened around the iron and copper walls, and water poured in from the holes, and the water level rose in an instant!

"What's going on!?" Xuanyuan Shun hugged Xiao Qingmai without saying a word, "Didn't we find the 'palace'!?" ”

Xuanyuan frowned, also thinking about what went wrong.

"Whoa—"

The sound of water filled Xuanyuan's ears, making her head even more chaotic.

"Luo Luo, are you alright?" Seeing Xuanyuan covering his head, Qi Yuyi was worried and wanted to go to her side, but he was hit by the current and stepped on the air, and directly immersed himself in the water.

Seeing Qi Yuyi waving his hands and feet indiscriminately in the water, Xuanyuan couldn't cry or laugh, and walked over to help Qi Yuyi, but he didn't want to be pulled into the water by the other party.

Xuanyuan was caught off guard and was suddenly pulled headlong into the water.

The icy water rushed towards her, and she shivered with cold stimulation.

Xuanyuan stood up suddenly, and the feeling of being wet made her chaotic head suddenly sober up a lot.

"Luo Luo, I'm sorry......" Qi Yuyi's face turned a little pale, and he was holding Xuanyuan Shun's arm tightly at this time, "I don't know how to water, so I was a little panicked just now." ”

It should be that Xuanyuan Shun found that the two of them were soaked in water, so he came to save people.

"Don't worry, I'm fine." Xuanyuan shook his head, not blaming Qi Yuying.

People who don't know how to swim are a little bit afraid of places with too much water because they feel like they can't control their lives, and that's too bad.

"Little Chiang Mai, do you think it's okay?" Xuanyuan looked at Xiao Qingmai, who had been silent, which made her a little worried.

Xiao Chiang Mai pursed her lips and shook her head, her face full of loss and guilt.

"What's wrong?" Xuanyuan touched Xiao Qingmai's head, and the child's sad expression made her feel a little distressed.

"If it weren't for my extra hands just now, there wouldn't be so much water here...... Xiao Chiang Mai said, tears pouring out of her eyes.

"Even if you don't press it, the water level will rise." Xuanyuan smiled at him soothingly, "Even if you don't press it, I'll press it when I find it—" (To be continued......)