【正文】 ed to do posttests. As a posttest can check the reliability and availability of the campaign. After checking the reliability and availability, the marketers can keep pushing the advertising campaign because all the data shows that it can reinforce the brand loyalty totally. With the data from the posttests, the analysists and marketers can correct the wrong brand positioning statement, and recreate the campaign. Within the process of repositioning campaign, to target the new segmentation is most important. Research methods Introduction The case study method is another mon qualitative research technique. Simply put, a case study uses as many data sources as possible to systematically investigate individuals, groups, anization, or events. [11] This paper attempts to analyse three critical factors. They are ① identify customer segementation based the data from the marketing research, ② brand image and positioning management by using the segmentation data, ③ reinforce brand loyalty by advertising during the brand image management process. A case study approach has been used in this research. In this paper, the study has established a framework for achieving brand loyalty:① identifying the best target customers by using quantitative research ② Deducing the lifestyle of those customers segmentation by qualitative research ③ recreate the brand image and positioning based on the information from qualitative research ④ deploying the media strategies to promote the brand image or positioning and reinforce the brand loyalty. Case study This paper focuses on the Wong Lo Kat(王老吉 ) as a case study. According to the information from the official website of Wong Lo Kat, it is the largest beverage (herbal tea) pany in China, belonging to the HongKong JDP Group Corporation. The beverage is a kind of functional drink in China. It was established in Qing Dynasty (1830s, .) , and recreated in 1938 after JapanChina war ended. The main production of HongKong JDP Group Corporation is Wong Lo Kat (王老吉 ) herbal tea. Wong Lo Kat herbal tea is a kind of beverage that helps to clear away the accumulated heat in the human body. Also, Wong Lo Kat herbal tea originated from Guangdong, and is a monly known health drink in the region. Guangdong is situated in Lingnan, which has a typical subtropical climate, and the weather is hot and humid. Under the influence of the climate, improper diet and lack of sleep would easily lead to body heat, which is catching “ heatiness” . In order to clear away excessive moist and heat in our body, historically Chinese in the region had traditionally used Chinese herbs with the functions of clearing away heatiness and summerheat, clearing excessive moisture and dissolving toxic substances in the human body, and made these herbs into different types of herbal tea, and then set up Chinese pharmacists who sold these tea products. The main ingredients of Wong Lo Kat herbal tea are: Holly root, LonghairyAntenoronHerb, Selfheal, Screwtree root. All these ingredients are widely used even today in the traditional Chinese medicine. According to the introduction from the electronic cite quotation Wikipedia, herbal tea, can be made with fresh or dried flowers, leaves, seeds or roots, generally by pouring boiling water over the plant parts and letting them steep for a few minutes. Seeds and roots can also be boiled on a stove. The tisane is then strained, sweetened if so desired, and served. Many panies produce herbal tea bags for such infusions. On the other hand, flavoured teas are prepared by adding other plants to an actual tea (black, oolong, green, yellow, or white tea)。s advertising market scale in the global market, ranks fifth in steady growth. At a pound rate of %, China39。 David H. Schaefer amp。 Joseph (2020). Mass Media Research:An Introduction (Eighth Edition) United Stated of America CA: Thomson Wadsworth [11] Roger amp。 Pearson Education International [5] David L. Loudon amp。 minutes of nonprogram material per hour in daytime.(Sissors,2020) But Wong Lo Kat has a huge budget to finish these media planning.[8] In addition to using television, Wong Lo Kat corporation used outdoor advertising such as billboards at busstops, metro stations, the roof of restaurants. On media strategy, Outdoor advertising can build large local coverage of wide population in many markets in a 30day period. Also, outdoor advertising is simple copy theme and identifiable easily.[9] Fit with Wong Lo Kat39。s brand.[5] What drives brand loyalty? The psychology behind human behavior as it pertains to brand selection can be both rudimentary and plicated at the same time.(Bill Nissim, 2020) Based on this, a good advertisement as sender and medium can be used to increase the market share, build up the brand image, reinforce the brand loyalty, ect. To better understand the process of how advertising reinforces the brand loyalty, a basic munications model is important. The five ponents of this model are sender, message, medium, receiver, and feedback. In our daily life, we are exposed to messages via the radio, television, billboards, Inter, mail, and wordofmouth (sender/medium). Although these messages are pervasive, we continu