add ours and task description

README.md

+# Minecraft Creative Human Study
+
+- `prepare` 按照任务存放图片，每个task下面的`ours`目录放我们的demo图片，`baseline`放baseline的图片
+- `release`是开放给human study的，到时候会打乱两组的顺序，按照 A 和 B 来命名
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prepare/task-0-bridge/task-description.md

+# Task 0: Bridge
+
+## Text Description
+
+The building is a simple east-west plank bridge.
+
+You don't need to create any subcomponents for supporting the bridge, assuming the support columns already provided and the water surface of the river is level with the ground.
+
+You can omit unnecessary decorative subcomponents and elements and make sure the bridge spans a 10-block-wide river and is easy to assemble and build.
+
+## Image Description
+
+- Front view
+
+    ![simple-bridge-front-view](./task-description.assets/simple-bridge-front-view.png)
+
+- Back view
+
+    ![simple-bridge-back-view](./task-description.assets/simple-bridge-back-view.png)
+
+- Left view
+
+    ![simple-bridge-left-view](./task-description.assets/simple-bridge-left-view.png)
+
+- Right view
+
+    ![simple-bridge-right-view](./task-description.assets/simple-bridge-right-view.png)
+
+- Top view
+
+    ![simple-bridge-top-view](./task-description.assets/simple-bridge-top-view.png)
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prepare/task-1-stair/task-description.md

+# Task 1: Stair
+
+## Text Description
+
+The building is a simple 12-block high stair. 
+
+You can build it layer by layer.
+
+## Image Description
+
+- Front view
+
+    ![stair-front-view](./task-description.assets/stair-front-view.png)
+
+- Back view
+
+    ![stair-back-view](./task-description.assets/stair-back-view.png)
+
+- Left view
+
+    ![stair-left-view](./task-description.assets/stair-left-view.png)
+
+- Right view
+
+    ![stair-right-view](./task-description.assets/stair-right-view.png)
+
+- Top view
+
+    ![stair-top-view](./task-description.assets/stair-top-view.png)
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prepare/task-2-arrow-tower/task-description.md

+# Task 2: Arrow Tower
+
+## Text Description
+
+The building is a simple 10-block high solid arrow tower.
+
+You can build it layer by layer and please make sure I can climb to the top of the tower through the ladder external.
+
+## Image Description
+
+- Front view
+
+    ![arrow-tower-front-view](./task-description.assets/arrow-tower-front-view.png)
+
+- Back view
+
+    ![arrow-tower-back-view](./task-description.assets/arrow-tower-back-view.png)
+
+- Left view
+
+    ![arrow-tower-left-view](./task-description.assets/arrow-tower-left-view.png)
+
+- Right view
+
+    ![arrow-tower-right-view](./task-description.assets/arrow-tower-right-view.png)
+
+- Top view
+
+    ![arrow-tower-top-view](./task-description.assets/arrow-tower-top-view.png)
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prepare/task-3-simple-tower/task-description.md

+# Task 3: Simple Tower
+
+## Text Description
+
+The building is a simple 12-block high solid simple tower. 
+
+You can build it layer by layer. Please make the appearance of the tower colorful.
+
+## Image Description
+
+- Front view
+
+    ![simple-tower-front-view](./task-description.assets/simple-tower-front-view.png)
+
+- Back view
+
+    ![simple-tower-back-view](./task-description.assets/simple-tower-back-view.png)
+
+- Left view
+
+    ![simple-tower-left-view](./task-description.assets/simple-tower-left-view.png)
+
+- Right View
+
+    ![simple-tower-right-view](./task-description.assets/simple-tower-right-view.png)
+
+- Top view
+
+    ![simple-tower-top-view](./task-description.assets/simple-tower-top-view.png)
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prepare/task-4-gothic-house/task-description.md

+# Task 4: Gothic House
+
+## Text Description
+
+The building is a simple gothic house. The length, width and height of the house should be no larger than 10 blocks
+
+Please make sure the door starts from the ground.
+
+## Image Description
+
+- Front view
+
+    ![gothic-house-front-view](./task-description.assets/gothic-house-front-view.png)
+
+- Back view
+
+    ![gothic-house-back-view](./task-description.assets/gothic-house-back-view.png)
+
+- Left view
+
+    ![gothic-house-left-view](./task-description.assets/gothic-house-left-view.png)
+
+- Right view
+
+    ![gothic-house-right-view](./task-description.assets/gothic-house-right-view.png)
+
+- Top view
+
+    ![gothic-house-top-view](./task-description.assets/gothic-house-top-view.png)
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prepare/task-5-chinese-ancient-house/task-description.md

+# Task 5: Chinese Ancient House
+
+## Text Description
+
+The building is a Chinese ancient house.
+
+The length, width and height of the house should be no larger than 15 blocks, and make sure the door starts from the ground.
+
+## Image Description
+
+- Front view
+
+    ![chinese-house-front-view](./task-description.assets/chinese-house-front-view.png)
+
+- Back view
+
+    ![chinese-house-back-view](./task-description.assets/chinese-house-back-view.png)
+
+- Left view
+
+    ![chinese-house-left-view](./task-description.assets/chinese-house-left-view.png)
+
+- Right view
+
+    ![chinese-house-right-view](./task-description.assets/chinese-house-right-view.png)
+
+- Top view
+
+    ![chinese-house-top-view](./task-description.assets/chinese-house-top-view.png)
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prepare/task-6-two-story-house/task-description.md

+# Task 6: Two-story House
+
+## Text Description
+
+The building is a simple two-story house (the ground floor and the first floor) with flat roof. 
+
+The length, width and height of the house should be no larger than 10 blocks and the door must start from the ground.
+
+## Image Description
+
+- Front view
+
+    ![two-story-house-front-view](./task-description.assets/two-story-house-front-view.png)
+
+- Back view
+
+    ![two-story-house-back-view](./task-description.assets/two-story-house-back-view.png)
+
+- Left view
+
+    ![two-story-house-lefrt-view](./task-description.assets/two-story-house-lefrt-view.png)
+
+- Right view
+
+    ![two-story-house-right-view](./task-description.assets/two-story-house-right-view.png)
+
+- Top view
+
+    ![two-story-house-top-view](./task-description.assets/two-story-house-top-view.png)
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