Administrative guidance refers to administrative subjects within their jurisdiction to adapt to complex and changing economic and social needs. In accordance with national laws or policies, timely and flexible guidance, advice, advice, negotiation, demonstration, and formulation of guiding policies, The release of relevant information and other non-mandatory means, with the consent or assistance of the administrative counterpart, to achieve a certain administrative purpose. According to the above definitions, which of the following is administrative guidelines? ['The Chinese government issues a joint investment to establish an AIIB.', 'A city meteorological bureau sends an orange warning signal to the public when typhoons are approaching.', "District B People's Government and Research Institute sign a contract for research and development of high-tech products.", "Bing County People's Government calls on the farmers in the county to grow peaches and provide preferential loans."]