What are the steps for hand-layout of the sky square and circle?

1, first of all, according to the actual size of the side view and top view drawing, and then the top view on the 1/4 arc of the circle divided into 3 equal parts. Then connect the divided points (1, 2, 3, 4) to point F with straight lines (a, b, c, d).

2, then draw a straight line, take a point I, measure the height of the dimensions of the I point as a starting point on the straight line marked with a point J. Then draw a line perpendicular to the I point. Then draw a line perpendicular to the intersection of the I point, measure the length of the line a with the I point as the starting point on the line marked point K, and then measure the length of the line b with the I point as the starting point on the line marked point L. Then use the line e to connect the K, J, and F points to the line. Then connect the points K and J with the line e, and connect the points L and J with the line f.

3, according to the following steps to connect the line:

1) the length of one side of the square head to draw a PQ line, find the center of the PQ line O to draw a perpendicular intersection with it.?

②Take the point Q as the center of the circle, the line e as the radius (hereinafter referred to as Qe arc) in the perpendicular intersection line to draw an arc intersecting the point 7, with a straight line to the 7, Q two points connected.

3) Draw an arc with point Q as the center and line f as the radius (hereinafter called Qf arc). Then measure the length of the chord between point 1 and point 2 in the top view (hereinafter referred to as 1 to 2 chord lengths) as the radius, point 7 as the center of the circle to draw an arc intersecting at point 6, and connect the points 6 and Q with a straight line.

4 With point 6 as the center of the circle, 1 to 2 chord lengths as the radius, draw an arc and Qf the arc intersects at point 5, and use a straight line to connect the two points 5 and Q.?

⑤ Take point 5 as the center of the circle, draw an arc of 1 to 2 chord lengths as the radius to intersect with the Qe arc at point 4, and connect the points 4 and Q with a straight line.

6 Take point Q as the center of the circle, point P as the radius of the circle arc, then take point 4 as the center of the circle, point Q as the radius of the circle arc intersected with point S, with a straight line to connect the two points Q and S. Then connect point 4 to point S with a straight line.

7 With point S as the center of the circle, point 4 as the radius of the arc (hereinafter referred to as S4 arc), and then with point S as the center of the circle, straight line f radius, draw the arc (hereinafter referred to as Sf arc).?

8 to point 4 as the center of the circle, 1 to 2 chord length for the radius of the arc of the circle and Sf arc intersected at point 3, with a straight line to 3, S two points connected.

9 to point 3 as the center of the circle, 1 ~ 2 chord length for the radius of the arc and Sf arc intersects at point 2, with a straight line to 2, S two points connected.?

⑩以点2为圆心，1～2弦长为半径绘圆弧与S4圆弧相交于点1，用直线把1、S两点连接。

4, point 4 as the center of the circle, point O as the radius of the arc (hereinafter referred to as the O4 arc), and then point S as the center of the circle, O, Q two points of the length of the radius (that is, 1/2 the length of the side) and the arc of the O4 arc intersected with the point T, a straight line to the S, T two points connected to the straight line, and then a straight line to the point 1 and the point T connected.

5. Connect 1, 2, 3, 4, 5, 6, 7 in turn with line segments to get 1/2 expanded diagram.?

6, if you want to complete the unfolding of the map can be according to the above steps in succession to the other half of the unfolding of the map.

The architectural philosophy of the sky is round

Traditional Chinese architecture, but also pay attention to the sky is round. The Temple of Heaven and the Temple of Earth, built in Beijing during the Ming and Qing dynasties, were constructed according to the principle of the circle of heaven and the circle of earth.

The Temple of Heaven is round, and the number of layers of the mound, the diameter of the platform, and the railing around it are all singular, i.e., yang, to symbolize that heaven is yang. The Temple of Earth is square, with eight steps on each of the four sides, all of which are even, i.e., yin, to symbolize the earth as yin.

Ordinary people, often in the square courtyard to build a round pool, or between the two yards to build a round moon gate, these are the embodiment of the circle of heaven and earth. The "courtyard" houses in the north are typical representatives of the doctrine of the circle of heaven and earth.

Reference: Baidu Encyclopedia - The Circle of Heaven and the Square of Earth