互联网背景下诞生的网络集体行动，越来越成为社会转型期频繁出现的一种社会现象。作为制度外的一种参与行为，网络集体行动在表达社会心声、展现出一定的舆论力量的同时，也逐渐由零散化、情绪化走向组织化、纪律化，并影响着我国的舆论环境、文化及现实政治决策空间。

2023年2月，因“旅美大熊猫乐乐去世事件”“旅美大熊猫丫丫事件”，我国掀起了一场大规模的网络集体行动。此次网络集体行动参与规模大、时间周期长、组织形式多元，同时行动扩展至国外线下场所，在国际舆论场上发挥影响力。可以说，“大熊猫丫丫事件”是中国网络集体行动中的一个“现象级”代表。因此，本文以其在微博平台的集体行动为例，通过大数据采集法、内容分析法和LDA主题聚类分析法，以价值累加理论为理论框架，在对“大熊猫丫丫事件”微博集体行动的组织结构和话语主题进行分析的基础上，考量其形成机制。

研究发现，在“熊猫外交意义”主题下，体现了国际外交关系不对等、国内网络民族主义发展和动物保护意识提升的结构性助因。而“呼吁官方接回和调查”的背后，则讲述了公众对于官方的不信任感加剧所产生的相对剥夺感。从“丫丫健康状态”不好，再到“意见领袖呼吁集体行动”，统一目标呼吁接回丫丫，完成了一般化信念的建构。“领导性行动”由意见领袖和专业媒体共同建构，意见领袖主动动员，专业媒体也通过网络议程设置，完成对“领导性行动”的曝光和赞赏，发挥直接或间接动员的作用。最后，“中国官方表态”的滞后导致虚假信息扩散和舆论约束失效，负面舆论没有及时得到引导，加剧了非理性声音的扩大和极端话语、行为的产生。

而对影响“大熊猫丫丫事件”微博集体行动的各要素的时间趋势进行可视化呈现和分析发现，案例中的集体行动发展周期与价值累加理论中因素的叠加存在一定的理论研究契合度。结构性助因及结构性紧张为集体行动的发生提供条件，并逐渐衍生出一般化信念，而后随着诱导因素的产生及领导性行动的组织动员下，集体行动彻底爆发，并且一般化信念在这个过程中不断被强化，贯穿行动始终，而社会约束机制在萌芽和爆发阶段未及时发挥作用，但与结构性紧张之间此消彼长的趋势体现了其一定的抑制作用。结构性助因还为集体行动持续赋予意义。

因此，本文提出，在网络集体行动中，政府和专业媒体需及时监测网络舆论和现实社会环境的变化，特别注意其中的结构性紧张因素，并对可预见的诱发因素主动干预，了解公众诉求，在重大问题面前及时回应公众需求，主动动员行动者们更有秩序和规则的表达，推动相关问题理性的讨论和解决。

The cyber collective action, emerging in the context of the internet, has increasingly become a frequent social phenomenon during social transformation. As a participatory behavior outside the system, while expressing social aspirations and demonstrating a certain public opinion force, it has gradually shifted from fragmentation and emotionality to organization and discipline, affecting China's public opinion environment, culture, and real-world political decision-making space.

In February 2023, due to the "death of giant panda Le Le" and the "giant panda Ya Ya incident," China witnessed a large-scale internet collective action. This cyber collective action featured a large participation scale, a long duration, and diverse organizational forms, while also extending to offline venues abroad, exerting influence on the international public opinion arena. It can be said that the "giant panda Ya Ya" is a "phenomenal" representative of China's internet collective actions. Therefore, taking its collective action on the Weibo platform as an example, this paper employs big data collection methods, content analysis, and LDA topic clustering analysis, with the value accumulation theory as the theoretical framework, to analyze the organizational structure and discourse themes of the Weibo collective action of the "giant panda Ya Ya " and examine its formation mechanism.

The study found that under the theme of "the significance of panda diplomacy," it reflects the structural contributing factors of unequal international diplomatic relations and the rising awareness of domestic animal protection. Behind the "call for official repatriation and investigation" lies the structural pressure brought by the unequal Sino-US diplomatic relations and the sense of relative deprivation arising from the public's increasing distrust of the authorities. "Ya Ya's health status" and "opinion leaders calling for collective action" represent the construction of a generalized belief that Ya Ya has suffered mistreatment and the unified goal of calling for her repatriation. "Leading actions" are jointly constructed by opinion leaders and professional media, with opinion leaders actively mobilizing, and professional media also completing the exposure and appreciation of "leading actions" through online agenda setting, directly or indirectly mobilizing and expanding the scale of collective action. Finally, the lag in the "statement of the Chinese authorities" led to the failure of social constraints, and negative public opinion was not timely guided, exacerbating the expansion of irrational voices and the emergence of extreme discourse and behavior.

A visual representation and analysis of the time trends of various elements affecting the Weibo collective action of the "giant panda Ya Ya incident" revealed a certain theoretical research congruency with the overlapping factors in the value accumulation theory. Structural contributing factors and structural tensions provide conditions for the occurrence of collective action, gradually leading to the emergence of generalized beliefs. Under the organizational mobilization of inducing factors and leading actions, collective action erupts completely, and generalized beliefs are continuously strengthened throughout the process, running through the entire action. However, social constraints did not play a timely role in the budding and outbreak stages.

Therefore, this paper proposes that in internet collective actions, the government and professional media need to timely monitor changes in internet public opinion and real-world social environments, paying special attention to structural tensions and proactive intervention in foreseeable inducing factors. Understanding public demands and responding promptly to them in the face of major issues, actively mobilizing actors to express themselves more orderly and with rules, promoting rational discussions and resolutions of related issues.