裹襠, 吊襠The Horizontal Expansion and The Vertical Suspension
To practice these advanced Wu style (吳氏) mechanics, you must distinguish between the lateral (horizontal) and longitudinal (vertical) forces in the pelvic bowl.
Wu style is a "small frame" system, so these movements are internal and subtle, whereas Yang style (楊氏) uses larger structural adjustments to create a heavy, grounded root.
1. How to Practice Wu Style's Diào Dāng (吊襠) and Guǒ Dāng (裹襠)
In Wu style, stability is achieved through the intersection of a horizontal circle and a vertical lift.
Guǒ Dāng (裹襠): The Horizontal Expansion
The Action: "The two legs act as one" (兩腿如一腿). This is a lateral rounding (橫向的圓撐 - héngxiàng de yuánchēng).
The Technique: It is an internal rotation of the root of the thigh (大腿根部的內旋 - dàtuǐ gēnbù de nèixuán).
Imagine your inner thighs are wrapping around an invisible cylinder.
Crucial Distinction: It is not wrapping the Kua (裹襠不是裹胯). If you "wrap the Kua" (hips), you lock the joint and lose mobility. By rotating the femur (thigh bone) internally at the socket, you keep the hip joint open and "alive" while creating a powerful, springy tension in the adductors.
Diào Dāng (吊襠): The Vertical Suspension
The Action: A longitudinal lift and gather (縱向的提收 - zòngxiàng de tíshōu).
The Technique: 1. Two Thighs Apply Force (兩股用力 - liǎng gǔ yònglì): Engage the muscles of the inner thighs upward.
2. Hips Sent Forward (臀部前送 - túnbù qiánsòng): Not a "thrust," but a subtle alignment where the tailbone moves slightly forward to meet the center of gravity.
3. Lower Abdomen Upward Flip (小腹有上翻之勢 - xiǎofù yǒu shàngfān zhī shì): This is the feeling of the pubic bone curling slightly upward. This "suspends" the crotch from below, preventing the energy from "leaking" out the bottom.
2. Comparison: Wu Style vs. Yang Style
The Yang style approach—Tí Gāng Diào Dāng (提肛吊襠) and Luò Kuà Shōu Wěilǘ (落胯收尾閭)—focuses more on "sinking" and "plumbing" the structure to the earth.
| Feature | Wu Style (裹襠 / 吊襠) | Yang Style (提肛 / 落胯 / 收尾閭) |
| Primary Direction | Internal Rotation/Wrap. Focuses on the "spring" created by wrapping the thighs. | Vertical Sink/Plumb. Focuses on the weight dropping through the tailbone. |
| The Tailbone | Túnbù Qiánsòng (臀部前送): Subtle forward alignment to support the slanting posture. | Shōu Wěilǘ (收尾閭): Tucking the tailbone to "center" it, acting like a plumb line to the ground. |
| Internal Lift | Xiǎofù Shàngfān (小腹上翻): An "upward flip" of the lower abdomen to create a suspension feel. | Tí Gāng (提肛): "Lifting the Anus." A more direct muscular engagement of the pelvic floor to close the "gate." |
| The Hip (Kua) | Guǒ Dāng (裹襠): Femur rotation while keeping the Kua "propped up" (上頂). | Luò Kuà (落胯): "Dropping the Kua." Letting the hips sit deeply into the "socket" to maximize ground force. |
3. The Core Difference in "Feel"
Wu Style: The "Spherical" Stability
The intersection of the Horizontal Wrap (裹) and the Vertical Suspension (吊) creates a pressurized "ball" in the pelvic area.
Strength: Because the thighs are internally rotated but the Kua is not collapsed, you can change direction instantly. This is the "Maneuverability" (Téng Nuó) you asked about earlier.
Shortcoming: If done incorrectly, it feels "pinched" or tight, which can block the circulation in the groin.
Yang Style: The "Hydraulic" Stability
The Yang style focuses on Dropping (落) and Tucking (收). It uses gravity to create a heavy, solid connection.
Strength: Immense "Grounding Force" (接地之力). It is very hard to move a Yang practitioner who has successfully "dropped their Kua" and "tucked their tailbone."
Shortcoming: It can be slower. The deep "sitting" posture takes more time to transition into a sprint or a jump compared to the Wu style's "primed" state.
Summary of the Wu Style Master's Key Advice
The most important takeaway for your practice is: "Two legs as one" (兩腿如一腿).
When you wrap the thighs (Guǒ Dāng) and lift the abdomen (Diào Dāng), the space between your legs shouldn't feel like an "empty hole" (which is weak). It should feel like a solid, unified column of energy that can still "divide empty and full" (分虛實) internally without the knees wobbling.
In Wu style (吳氏), the internal rotation of the femur and the concept of "Horizontal Expansion" are highly specific to its "Small Frame" mechanics. It creates a "coiled spring" sensation that differs significantly from the "arch" or "bridge" structure of the Yang style.
1. How the Femur Rotates in Wu Style Guǒ Dāng (裹襠)
In Guǒ Dāng, the rotation is an Internal Rotation (內旋 - nèixuán) of the thigh bone within the hip socket.
The Mechanism
The Pivot Point: The rotation happens at the root of the thigh (大腿根部 - dàtuǐ gēnbù).
The Action: Imagine your kneecaps are being drawn slightly toward each other by the internal muscles, while your hips (Kua - 胯) remain open and "propped up" (上頂 - shàng dǐng).
The "Wrap" (裹): Think of a spiral. The energy wraps from the outside of the hip, around the front of the thigh, and tucks into the inner groin.
The Goal: This "screws" the leg into the hip socket. It creates a unified lower body (兩腿如一腿). When the femurs are internally rotated this way, the pelvis becomes a stable, pressurized platform that can pivot instantly without the knees "wobbling" or the weight "sloshing" side-to-side.
2. Horizontal Expansion: Wu Style vs. Yang Style Yuán Tún (圓臀)
While both styles seek to avoid a "flat" or "collapsed" buttock, they achieve stability through different geometric intents.
Wu Style: Horizontal Wrapping (橫向裹襠)
Geometry: A Closed Circle.
Physical Sensation: It feels like "tightening a bolt." By internally rotating the femurs, you "close" the front of the crotch while keeping the back of the pelvis wide.
Functional Intent: Compression and Readiness. This creates the Téng Nuó (騰挪) state we discussed—you are like a compressed spring. Because the legs are "wrapped" together internally, you can shift "Empty and Full" (分虛實) with almost zero visible external movement.
Yang Style: Rounded Buttocks (圓臀 - yuán tún)
Geometry: An Open Arch.
Physical Sensation: It feels like "stretching a bow." The focus is on Sōng Yāo Luò Kuà (鬆腰落胯). You relax the lower back and let the buttocks "round out" (like sitting on a large beach ball).
Functional Intent: Expansion and Grounding. Yuán Tún works with Shōu Wěilǘ (收尾閭) to create a vertical "plumb line." It aims to maximize the surface area of the "root" and channel the ground force (接地之力) upward through a relaxed, open structure.
3. Comparison Summary
| Feature | Wu Style (Internal Femur Rotation) | Yang Style (Yuán Tún / Rounded Buttocks) |
| Primary Force | Spiral/Torsional. (Like twisting a towel). | Structural/Arch. (Like a stone bridge). |
| Kua (Hip) State | Propped (上頂). High tension, high readiness. | Dropped (落胯). Deeply settled, heavy. |
| The "Circle" | Focuses on the inner thigh wrapping (Horizontal). | Focuses on the outer hip rounding (Spherical). |
| Weight Shift | Pivoting on a "point" (Internal rotation). | Shifting through a "base" (Sinking and pushing). |
Practical Check for your Wu Style Practice:
When you perform Guǒ Dāng, check your knees. If your knees are collapsing inward (knock-kneed), you are "wrapping the Kua" (wrong). If your knees are pointing straight or slightly out, but you feel a pulling/twisting sensation in the skin and fascia of your inner thighs, you have achieved the Femur Rotation (大腿根部內旋) correctly.