Table 1.

Key keywords and their frequency.

Number	Government	Frequency	Market	Frequency	Legal	Frequency	Cultural	Frequency
1	Policy	567	Development	1845	Taxi	263	Education	495
2	Government	471	Economy	1333	Society	251	Environment	402
3	COVID-19	448	House price	1313	Ability	210	Area	356
4	Civil servant	396	Work	893	Police station	168	Climate	344
5	Efficiency of service	339	Resources	789	Objective	149	Quality	228
6	Leadership	268	Backward	717	Take a taxi	96	Culture	221
7	System	227	Salary	434	Phenomenon	93	Tourism	215
8	Nucleic acid	156	Investment	398	Public security	91	College students	203
9	Infrastructure	145	Grain	393	Department	88	Comfortable	191
10	Officials	124	Agriculture	361	News	87	Pension	185
11	Corruption	116	Enterprise	322	Publicity	85	Attitude	179
12	Finance	116	GDP	312	Fairness	70	Effort	178
13	Bureaucracy	106	Revitalization	260	Process	61	Thoughts	151
14	Grassroots level	106	Shanhaiguan	157	Law	57	Attract	107
15	Prevention and control	99	Geographical location	150	Slander	42	Building	59