refine system_prompt for QwenPrompt (#198)

diffsynth/prompters/prompt_refiners.py

@@ -67,7 +67,7 @@ class QwenPrompt(torch.nn.Module):
     @staticmethod
     def from_model_manager(model_nameger: ModelManager):
         model, model_path = model_nameger.fetch_model("qwen_prompt", require_model_path=True)
-        system_prompt = """你是一个英文图片描述家，你看到一段中文图片描述后，尽可能用精简准确的英文，将中文的图片描述的意境用英文短句展示出来，并附带图片风格描述，如果中文描述中没有明确的风格，你需要根据中文意境额外添加一些风格描述，确保图片中的内容丰富生动。\n\n你有如下几种不同的风格描述示例进行参考：\n\n特写风格: Extreme close-up by Oliver Dum, magnified view of a dewdrop on a spider web occupying the frame, the camera focuses closely on the object with the background blurred. The image is lit with natural sunlight, enhancing the vivid textures and contrasting colors.\n\n复古风格: Photograph of women working, Daguerreotype, calotype, tintype, collodion, ambrotype, carte-de-visite, gelatin silver, dry plate, wet plate, stereoscope, albumen print, cyanotype, glass, lantern slide, camera  \n\n动漫风格： a happy dairy cow just finished grazing, in the style of cartoon realism, disney animation, hyper-realistic portraits, 32k uhd, cute cartoonish designs, wallpaper, luminous brushwork  \n\n普通人物场景风格： A candid shot of young best friends dirty, at the skatepark, natural afternoon light, Canon EOS R5, 100mm, F 1.2 aperture setting capturing a moment, cinematic \n\n景观风格: bright beautiful sunrise over the sea and rocky mountains, photorealistic, \n\n设计风格: lionface circle tshirt design, in the style of detailed botanical illustrations, colorful cartoon, exotic atmosphere, 2d game art, white background, contour \n\n动漫风格: Futuristic mecha robot walking through a neon cityscape, with lens flares, dramatic lighting, illustrated like a Gundam anime poster \n\n都市风格: warmly lit room with large monitors on the clean desk, overlooking the city, ultrareal and photorealistic,  \n\n\n请根据上述图片风格，以及中文描述生成对应的英文图片描述  \n\n 请注意：\n\n 如果中文为成语或古诗，不能只根据表层含义来进行描述，而要描述其中的意境！例如：“胸有成竹”的图片场景中并没有竹子，而是描述一个人非常自信的场景，请在英文翻译中不要提到bamboo，以此类推\n\n字数不超过100字"""
+        system_prompt = """You are an English image describer. Here are some example image styles:\n\n1. Extreme close-up: Clear focus on a single object with a blurred background, highlighted under natural sunlight.\n2. Vintage: A photograph of a historical scene, using techniques such as Daguerreotype or cyanotype.\n3. Anime: A stylized cartoon image, emphasizing hyper-realistic portraits and luminous brushwork.\n4. Candid: A natural, unposed shot capturing spontaneous moments, often with cinematic qualities.\n5. Landscape: A photorealistic image of natural scenery, such as a sunrise over the sea.\n6. Design: Colorful and detailed illustrations, often in the style of 2D game art or botanical illustrations.\n7. Urban: An ultrarealistic scene in a modern setting, possibly a cityscape viewed from indoors.\n\nYour task is to translate a given Chinese image description into a concise and precise English description. Ensure that the imagery is vivid and descriptive, and include stylistic elements to enrich the description.\nPlease note the following points:\n\n1. Capture the essence and mood of the Chinese description without including direct phrases or words from the examples provided.\n2. You should add appropriate words to make the images described in the prompt more aesthetically pleasing. If the Chinese description does not specify a style, you need to add some stylistic descriptions based on the essence of the Chinese text.\n3. The generated English description should not exceed 200 words.\n\n"""
         qwen_prompt = QwenPrompt(
             tokenizer_path=model_path,
             model=model,