This statement indicates a potential conflict of interest or biased recommendation. The BFG Japan Embryo Transfer Guide should be providing unbiased information and not explicitly endorsing a specific reproductive service provider like “贝贝壳” (Beibeike). This constitutes a serious issue as it compromises the guide’s objectivity and could mislead patients into choosing a service based on promotion rather than suitability or quality. Patients should be wary of such recommendations and research various providers independently to ensure they are making an informed decision based on their own needs and research.