Li Yichen and Qin Xiaoyue both showed surprised expressions when they heard the old village chief's words.

They fished at the pier for about three hours yesterday and didn't catch anything.

No, that's not quite accurate.

Li Yichen caught a stone.

"Teach us."

Li Yichen humbly sought advice.

"Hehe......"

The old village chief smiled: "If you want to live on Fuhua Island, you must know two basic knowledge related to the ocean. The first is the current, and the second is the tide.

The current affects whether we can catch fish or not, and the tide is related to the safety of our going to sea.

Let's talk about the most important tide first, do you know what time the tide rises and what time the tide goes down on Howard Island today? ”

Li Yichen and Qin Xiaoyue both shook their heads at the same time and said, "I don't know." ”

"The tides around our Howard Island are called semi-daily tides, which means that there will be two high tides and two low tides in a day, and the process of high tide and low tide will be almost a little more than six hours apart."

Maybe it's been a long time since I've had the opportunity to encounter a little blank paper on Fuhua Island that doesn't understand anything, and the old village chief speaks slowly and patiently.

"Today's tide height time is about 12 o'clock in the afternoon and 1 o'clock in the morning, and the low tide time is about 6 o'clock in the morning and 6:30 in the evening......

Qin Xiaoyue didn't feel anything special when she heard it, she just wanted to sleep, and her sleepiness began to rise.

And Li Yichen thought of the time when he went out for a walk at six o'clock in the morning, and found that the reason why the islanders were particularly busy at that time was because of the low tide at six o'clock in the morning.

He had a feeling of sudden realization, a sense of accomplishment that the puzzle had been solved, and a sense of admiration for the old village chief, who could easily say the high and low tides, these four key points in time, there must be some secret!

Li Yichen said curiously: "Is there any special way to calculate the time of high tide and low tide?" ”

The old village chief said calmly: "Look at the weather forecast......

“？！”

Li Yichen's eyes widened, and he felt a sense of shame that he had failed to live up to the twelve years of compulsory education and four years of higher education.

I actually forgot about science!

"Hahaha......"

The program team heard the unexpected and reasonable answer of the old village chief, especially with Li Yichen's stunned expression, and they all laughed.

"Hehe......"

The old village chief himself smiled: "However, we folk do have their own set of methods, which can roughly calculate the time of high and low tide each day, which is calculated by the lunar calendar."

On the first and fifteenth days of the lunar calendar, both are twelve o'clock in the morning and evening, and from the second to the fourteenth day of the lunar calendar, multiply the lunar calendar by 0.8, and from 16 to 29, subtract fifteen, and then multiply by 0.8.

The calculated number is the time of the highest tide of each day, and if you add and cut six hours before and after, you can roughly know the time of high and low tide of each day.

It's just that this algorithm will be about an hour different from the exact time in the weather forecast.

So now before we go to sea, for safety, we will first look at the weather forecast. ”

"I see...... I get it......"

Li Yichen nodded, and did the mental calculation, today is the twenty-eighth day of the lunar calendar, and the calculated time is 10.4, that is, the climax at 10:25 in the morning.

Push forward for six hours, the low tide is 4:25, push back six hours, and the second low tide is 4:25 pm.

It is indeed more than an hour behind, and the error is actually quite large.

It's no wonder that everyone now chooses to trust the weather forecast.

However, the wisdom of the ancestors to be able to summarize this simple and easy-to-use method is really amazing.

"Ha~"

Qin Xiaoyue finally couldn't hold back, pretending to tie her shoes, bowed her head and hid under the table, and secretly yawned.

What is this addition, subtraction, multiplication and division, I have long been confused.

I admired Li Yichen even more in my heart, he was able to talk to the old village chief, it was amazing.

"I'm going to pour water for everyone......"

Qin Xiaoyue found an excuse to serve tea to the bigwigs and slipped away.

If she sat and listened any longer, she might really fall asleep.

Li Yichen had a feeling of unfinished business at this time, and he was very interested in this knowledge, because it was related to their living standards on Fuhua Island in the future.

"So what can we do when the tide is low?"

Li Yichen asked the old village chief a very targeted question, and added: "When I went out for a walk at six o'clock in the morning, I saw many people carrying buckets to the west of the island. ”

"That's a good question."

The old village chief smiled: "On the cliff to the west, if you climb down the cliff, a rocky beach will be exposed when the tide is low, and we are used to calling that place 'small pillow'.

After the small pillow appears, you can turn the abalone under the rock, pick the turtle feet in the rock crevices, and scrape the seaweed on the rock surface...... Lots of seafood.

There is also a place to go after low tide on Howard Island, on the east side of a sandy beach, which we used to call 'big pillows'.

If you're lucky, you'll be able to catch some fish, shrimp, crabs, and even moray eels that have been left behind. ”

"Wow......"

Li Yichen's eyes lit up, this is all valuable information about the source of food.

I can finally get rid of the days of drinking cabbage soup and radish soup every day.

"What about fishing spots? There are also fishing spots that everyone frequents, right? ”

Li Yichen asked.

"That's the water flow that I haven't talked about yet......"

Qin Xiaoyue came over with water at this time, and gave the old village chief and his wife a cup first, and when she heard that the old village chief was about to start a tirade again, she directly took the cup of water that was supposed to be given to Li Yichen again.

"There seems to be something dirty at the bottom of the cup, I'll go change it again."

After saying that, he turned around and slipped away.

The old village chief took a sip of water and began to teach patiently and meticulously again.

“…… The characteristics of flowing water can be divided into two parts......"

“…… Therefore, where there is current, the fish will be more active, and where there is a dead current, there will be almost no fish......"

“…… In addition, some of the sea surface is white, as if there is a layer of oil floating on it, reflecting white light, and it is easy to catch fish in this water, but on the contrary, where the water is too clear, it is not easy to get a harvest......

“…… There are two popular fishing spots on Howard Island......"

“…… There are three major categories of sea fishing, rock fishing, beach fishing, and raft fishing......"

“…… There are three major techniques, float fishing, sinking fishing, and drag fishing......"

“…… There are 25 commonly used fishing methods, which are the '25 methods of sea fishing'......"

In this basic class, the old village chief talked about it until it was close to noon, and finally stopped unsatisfied.

It's been a long time since anyone has heard him talk about these things.

"Kid, if you want to know anything in the future, ask me again."

The old village chief left this sentence and happily went home with his wife.

Seeing off the old village chief and his wife, Li Yichen just returned to the courtyard and shouted excitedly at Wang Gaoming.

"Director Wang, borrow two boxes of bait!"