Heavy rain
Next morning when we wake up, we see that there is no water around the small mountain at all. The land is a mess. After breakfast ,we pack everything and walk down hill. Sam is in front of us.
Suddenly, Sam disappears in front of us. We all run forward and see that Sam falls into a hole on the mess land. The hole is so dark that we can see nothing.
"Sam! Are you Ok there?" Lily yells to the hole in a hurry.
"I am fine inside here. I am stuck in the middle of the hole." From the deep dark hole, here comes the voice of Sam.
The action leader puts a strong torch inside the hole. We see that Sam is stuck by a stone in the middle of the hole. Originally, this is connected with an underground river. There is no water inside the hole now.
Upon seeing the torch light, Sam feels easy. Since the hole is too deep, we advise Sam to put an oxygen candy into his mouth so that he can get enough oxygen. At the same time, we put down a smart rescue belt into the hole. The smart rescue belt reaches Sam and holds Sam's waist. Gradually, our smart robot pulls Sam up. Sam has only some skin hurts. There is no other problem with Sam. We all feel relaxed.
Later on, for the safety reasons, all of us are connected with each other by the belts on our waists. In this case, if anyone falls into a hole again, we can still hold him or her so that he or she will not fall too far away from surface. At the same time, we have two smart robots walk in front of us to explore the way.
Finally, we arrive at a river at noon. The river is very wide and runs towards sea.
"This river is beautiful. Look at those trees at the two sides. The leave is so big. The fruit is so big. The fruit is as big as the coconut on our earth." Lily says while washing her face.
"I love this river. It is wide but it is calm. Those inverted images in water make the scene even more beautiful." Replies Mei.
We find some strange water creatures in the river.
"Although they are all water creatures, those water creatures are totally different from the water creatures on our earth. They have strange faces." Sam says while starring at those water creatures.
"The feeling is the same when you touch the water." Lily says.
"Of course the feeling is the same. Water is same water all over universe." Replies Tony.
"OK, let us walk along the river towards inland. Maybe we can find the original source of this river." The action leader suggests.
"OK, let us go upstream. Maybe we can also reach the boundary of the immigration area." Agrees Mei.
Under the leadership of the action leader, we walk along the river to upstream. In the evening, we arrive at a plain. We plan to camp there at night.
Next morning, we continue our journey towards upstream. The immigration area is so large that we cannot reach the boundary by foot.
"This river is so long. Maybe the origin of this river is not inside our immigration area. Let us stop here." The action leader tells us.
At this time, the weather changes. Dark cloud covers the whole sky with very low height. The sunny day becomes very cloudy day all of a sudden. This is the first time for us to meet this weather changing.
"Not good! It seems to me that there will be a huge weather change in a very short period of time. A heavy rain is coming." The action leader tells us while looking at the sky.
"There is a hill over there. Let us leave the river and go to the hill, just in case." I remind the action leader.
"Good suggestion. If there is a heavy rain, the river must overflow. At that time, here will be a lake. Let us go to the hill to avoid flooding." Mei reminds us, too.
"OK, Let us be on the backs of our robot tigers. Let us run towards the hill nearby." The action leader gives the order.
As soon as hearing the order from the action leader, we are all on the backs of our smart robot tigers. Our smart robot tigers run towards the hill with us on their backs. The smart robots run with us, too.
Very soon, the heavy rain begins. Accompanying the heavy rain, the big wind blows strongly with frequent lightening. We run fast in the heavy rain, strong wind and frequent lightening.
All of a sudden, the water falls down from sky like water pouring out from a lake. The river overflows immediately. The two sides of the river become lake immediately.
Before the water reaches the legs of our smart robot tigers, we reach the hill.
Look around from the hill, I can see that surroundings becomes a big lake. Since the wind is too strong, we cannot set up tents on the hill. Under such circumstance, we let our smart robots and robot tigers surround us to form a close wall. Inside the close wall, we use a single person sealed capsule to exchange wet clothes one by one. After putting on dry clothes, everyone also puts a sealed overcoat to protect him or her from violent wind and rain. The overcoat can cover the whole body including head. If it is necessary, everyone can also put an oxygen candy in mouth to get oxygen.
After exchanging clothes and wearing overcoats to protect us, we all sit on the hill to observe the surrounding situation.
At this time, the rain is heavier and heavier, the wind being stronger and stronger. In front of us, the lake becomes an endless sea. The river disappears without a trace. We cannot distinguish where is the river and where is the plain.
Since there is only one hill nearby, all of those thunders and lightning strike the hill where we are. Thanks to our smart robots, they set up a metal net to shield us from being hurt by those thunders and lightning.
"The wind and storm are much much stronger than those on our earth. The heavy rain just likes water being poured from a sky lake directly and constantly." Lily says.
"Yes, this is the first heavy rain met by us on this planet. Maybe, the rain season comes on this place." Replies Sam.
"Instantly, a river disappears and a lake appears. This is an amazing phenomenon on this planet. Thanks to our smart robot tigers and our smart robots. Without them, we cannot be here. In future, no matter where we go, we must have our smart robot and smart robot tiger with us for safe reasons." Mei tells us with smile. We all agree.