Ye Feng took the rope and began tying a knot.

After he finished, he carefully recalled the steps of the recycling knot, thinking as he tied it, and experimented for several minutes before finally succeeding in tying it to the tree trunk.

A recycling knot is a knot where the rope is tied together and then split into two.

One is used for climbing or descending the mountain, and the other is for recycling.

Once you reach the destination, simply pull on it and the knot will come off, making it easy to retrieve.

In the past, when watching Man vs. Wild, Bear Grylls would usually use this method to descend the mountain.

"Da Xiong and Zhan Pengwu, go ahead. Remember! Don't grab the wrong rope, or we're doomed."

Ye Feng gave some instructions, then had everyone hold onto the ropes and walk backwards down the cliff.

Fortunately, it's always a slope here, not very vertical, and the slope isn't very long either.

Under his command, everyone quickly and safely climbed to the foot of the mountain.

Ye Feng felt very fortunate after getting down; thankfully, he had a rope.

Because there are many trees obscured by the white fog along the way, if you accidentally slip, you will almost certainly hit a tree trunk.

Poor visibility can indeed cause a lot of inconvenience. This is the main reason why you shouldn't travel on rainy days.

After retrieving the rope, Ye Feng glanced at the map.

Now, he can only follow the route shown in the map and feel his way forward through the fog.

This greatly slowed down their pace.

Ye Feng wanted to walk faster, but he was also afraid of taking the wrong path, which would waste even more time.

So the group could only keep an eye on the map and carefully move forward slowly, stepping on the sticky, wet soil.

However, there are advantages as well as disadvantages. Although the heavy rain made it difficult for them to move around, it also caused most of the poisonous insects to hide back in their burrows.

At least, they no longer have to be constantly wary of the threat from poison.

12 noon——

The rain has lessened considerably, far less intense than before…

After traveling slowly for more than two hours, the group arrived at the foot of a cliff that dipped inward.

The cliff is only about ten meters high, with uneven walls, pits and hollows, and covered with moss.

It looks like it's built up layer upon layer of stone bricks.

Below was a forest, with many sub-adult giant eucalyptus trees growing there.

It must be said that the Amazon's terrain and environment are truly diverse.

Ye Feng had been calculating in his mind since he arrived this morning.

He estimated that even if they traveled non-stop, they had only covered about 2.3 kilometers, and certainly no more than 2.5 kilometers.

They had lived here for so long, yet this place felt completely foreign to them; they had never been here before.

The group didn't plan to rest. They walked slowly, so they didn't waste much energy.

But just as he was about to walk through this area, Zhan Pengfei stopped in his tracks.

He was hunched over, his head tilted back, as if trying to sniff something.

"Xiao Fei, what are you doing? Hurry up and catch up..."

Zhan Pengwu urged impatiently…

Zhan Pengfei pointed to the top of the cliff and then looked at Ye Feng…

"Brother Feng, can you smell something?"

Ye Feng also sniffed deeply and found that the air was mostly filled with the smell of earth...

But upon closer inspection, there was a familiar fishy smell in it.

He raised an eyebrow, a sense of doubt creeping over him…

"There's no river around here, so where's the fishy smell coming from?"

Zhan Pengfei pointed to the top of the cliff shrouded in white mist…

"Brother Feng, there should be fish vine grass up there."

Upon hearing this, Ye Feng quickly took out his binoculars and began to carefully scan the cliff.

However, because the fog was too thick, he couldn't see anything up there at all.

"Are you sure it's vine? This thing is a subtropical plant, how come it's here?"

Zhan Pengfei didn't answer immediately. He quickly walked to the foot of the cliff, sniffed for a while, and then nodded firmly, saying:

"That's right! There must be fish vine on it. Traditional Chinese medicine emphasizes observation, listening, questioning, and palpation."

When I first started studying medicine, my teacher made me smell Chinese medicine every day in order to train my nose.

This fish vine is also a traditional Chinese medicine, and it has a strong ability to adapt to soil and environment.

Besides China, there are also quite a few of them growing in South America. That's definitely true.

"Hehehe...Excellent!"

Upon hearing this, Ye Feng burst out laughing and immediately asked Fu Changxiong to fetch the rope.

Seeing his excitement, Liu Sisi asked, puzzled:

"Brother Feng, what illness can this fish vine cure? Why are you so happy?"

Ye Feng looked around, rope in hand, searching for a way up while explaining...

"Rhizophora doesn't have much medicinal value, but it contains an active substance called rotenone."

This ingredient is the nemesis of all fish and insects; if inhaled, they will be stunned, and smaller fish may even die from the poison.

However, this thing doesn't harm mammals at all; it's definitely a great thing!

Liu Sisi grinned, and roughly understood what Ye Feng meant.

According to the map, they will have to cross countless rivers along the way.

Having experience living on the water, they naturally understand that the most dangerous factor comes from the terrifying predators lurking in the river.

Having this fish vine is like having a life-saving piece of equipment.

Only in this way could Ye Feng be so happy…

"Brother Feng, can this vine even poison crocodiles?"

Ye Feng paused for a moment, then shook his head…

"The survival guide says that rotenone does have a stun effect on some large fish."

However, crocodiles are amphibians and reptiles, so they cannot be entirely considered fish.

However, they are also very averse to rotenone and will usually just stay far away. Its effect is quite significant…”

As he spoke, Ye Feng found the largest tree closest to the cliff face.

There was a branch growing horizontally from the tree, about the thickness of an arm, which was growing towards the top of the cliff.

He carefully estimated the distance; the branch was slightly lower than the cliff face, about two meters away.

The only way to get to the top of the cliff is to jump up from there.

This job can only be done by people who are agile and skillful...

So he looked at Tang Weiwei and Zhan Pengwu…

"Which of you has a better jumping ability? Jump up from that branch."

"Let me do it!"

Zhan Pengwu rolled up his non-existent sleeves and took the lead...

"What are you coming for!?"

Tang Weiwei pushed him away...

“That branch isn’t even as thick as your arm. If you step on it and break it, you’ll definitely fall to your death. I’d be better off doing this job.”

"Um!"

Ye Feng nodded; he also felt that Tang Weiwei was the most suitable.

He immediately disassembled the rattan and hemp rope that had been assembled together.

Tie a stone to one end of the vine and have Qi Xiaojie throw it over the branch.

After landing, for safety reasons, Tang Weiwei was tied to her waist as an aid for climbing and as a safety rope.