diff --git a/docs/en/COPILOT_SCHEMA.md b/docs/en/COPILOT_SCHEMA.md
new file mode 100644
index 0000000000..b43f404753
--- /dev/null
+++ b/docs/en/COPILOT_SCHEMA.md
@@ -0,0 +1,130 @@
+# Copilot Schema
+
+Usage of `resource/copilot/*.json` and field description.
+
+## Overview
+
+```jsonc
+{
+    "stage_name": "暴君",           // Stage name, required. Name should be in Chinese except for C.C. (contingency contracts)
+    "opers": [                      // Operator list
+        {
+            "name": "棘刺",         // Operator name
+
+            "skill": 3,             // Skill ID with range [1, 3], optional, 1 by default
+
+            "skill_usage": 0,       // Skill usage, optional, 0 by default
+                                    // 0 - Used on `actions`
+                                    // 1 - Used when ready (e.g. Thorns: Destreza, Myrtle: Support Beta)
+                                    // 2 - Used when ready, only once（e.g. Mountain: Sweeping Stance）
+                                    // 3 - Auto-decision (not implemented)
+                                    // 0 for auto skills
+
+            "requirements": {       // Requirements, optional, empty by default
+                "elite": 2,         // Elite requirement, optional, 0 by default
+                "level": 90,        // Level requirement, optional, 0 by default
+                "skill_level": 10,  // Skill level requirement, optional, 0 by default
+                "module": 1,        // Module requirement, optional, 0 by default
+                "potentiality": 1   // Potential requirement, optional, 0 by default
+            }
+        },
+    ],
+    "groups": [
+        {
+            "name": "任意正常群奶",  // Group name, required
+                                    // Any name is accepted as long as it matches the `name` field in `deploy` below
+
+            "opers": [              // Operators to be chosen randomly, similar to the `opers` field above. Operators with higher levels have higher priority.
+                {
+                    "name": "夜莺", // Nightingale
+                    "skill": 3,
+                    "skill_usage": 2 // Skill CD may differ
+                },
+                {
+                    "name": "白面鸮", // Ptilopsis
+                    "skill": 2,
+                    "skill_usage": 2
+                }
+            ]
+        }
+    ],
+    "actions": [                    // Actions in order, required. Will be executed sequentially
+        {
+            "type": "部署",         // Action type, optional, "Deploy" by default
+                                    // "Deploy" | "Skill" | "Retreat" | "SpeedUp" | "BulletTime" | "SkillUsage"
+                                    // "部署"   |  "技能"  |  "撤退"   | "二倍速"   |  "子弹时间"  |  "技能用法"
+                                    // Both English and Chinese are supported
+                                    // "Deploy" will wait until the cost is enough (unless timeout)
+                                    // "Skill" will wait until the skill is ready (unless timeout)
+                                    // "SpeedUp" is switchable, i.e. after using it will become 2x speed, and using it again will make it back to normal speed
+                                    // "BulletTime" is the 1/5 speed after clicking any operator. Proceeding with any other action will make it back to normal speed
+
+            "kills": 0,             // Waiting until the number of kills required is reached, optional, 0 by default
+
+            "cost_changes": 5,      // Waiting until the cost changes for the amount specified, optional, 0 by default
+                                    // Note that it calculates since the action starts (based on the cost of the previous action)
+                                    // Recognition is accurate when the cost is 2 digits. Not recommended for 3-digit costs.
+            // TODO: Other conditions
+            // TODO: "condition_type": 0,    // Condition aggregation type, optional, 0 by default
+            //                        // 0 - AND； 1 - OR
+
+            "name": "棘刺",         // Operator/group name, required when `type` is one of "Deploy" | "Skill" | "Retreat"
+
+            "location": [ 5, 5 ],   // Position for deployment 
+                                    // Required when `type` is "Deploy"
+                                    // Optional when `type` is "Retreat"
+                                    // Recommended only when multiple summons exist, retreating with location instead of name
+                                    // Please simply use name to retreat for normal operators
+
+            "direction": "左",      // Direction for deployment, required when `type` is "Deploy"
+                                    // "Left" | "Right" | "Up" | "Down" | "None"
+                                    // "左"   |  "右"   | "上"  | "下"   |  "无"
+                                    // Both English and Chinese are supported
+
+            "skill_usage":  1,      // Override skill usage settings, required when `type` is "SkillUsage"
+                                    // E.g.: Myrtle needs to attack without using the skill at the beginning, and use the skill automatically later.
+                                    // Set it to 1 in that case.
+
+            "pre_delay": 0,         // Pre-delay in ms, optional, 0 by default
+            "rear_delay": 0,        // Post-delay in ms, optional, 0 by default
+
+            // "timeout": 999999999,   // Reserved field, not implemented
+                                    // Timeout time in ms, optional when `type` is "Deploy" | "Skill", INT_MAX by default
+                                    // Will proceed with the next action when timeout
+
+            "doc": "下棘刺了！",     // Description, optional, displayed on the UI with no effects
+            "doc_color": "orange"   // Description colour, optional, displayed on the UI with no effects
+        },
+                                    // Example 1
+        {
+            "name": "任意正常群奶",
+            "location": [ 5, 6 ],
+            "direction": "右"
+        },
+                                    // Example 2
+        {
+            "name": "史尔特尔",
+            "location": [ 4, 5 ],
+            "direction": "左",
+            "doc": "你史尔特尔奶奶来啦！",
+            "doc_color": "red"
+        },
+                                    // Example 3
+        {
+            "type": "二倍速"
+        }
+    ],
+    "minimum_required": "v4.0",     // Minimum required MAA version, required, reserved field, not implemented
+    "doc": {                        // Description, optional
+        "title": "低练度高成功率作业",
+        "title_color": "dark",
+        "details": "对练度要求很低balabala……",      // You can write your name here, video link, walkthrough link, etc.
+        "details_color": "dark"
+    },
+}
+```
+
+## Example
+
+[Sample](../resource/copilot/test.json)  
+[GA-EX8 Raid](../resource/copilot/GA-EX8-raid.json)