public static Boxing get() {
        BoxingConfig config = BoxingManager.getInstance().getBoxingConfig();
        if (config == null) {
            config = new BoxingConfig(BoxingConfig.Mode.MULTI_IMG).needGif();
            BoxingManager.getInstance().setBoxingConfig(config);
        }
        return new Boxing(config);
    }
call {@link #of(BoxingConfig)} first to specify the mode otherwise {@link BoxingConfig.Mode#MULTI_IMG} is used.<br/>
boxing/src/main/java/com/bilibili/boxing/Boxing.java