## 1 Introduction
### Questionnaire Survey  
The questionnaire for the experiment was powered by www.wyx.cn (accessed on 28 September 2021). The initial questionnaire included a brief introduction to the experiment, determined the willingness of respondents to participate, and collected demographic characteristics. With the setting that each user could only answer once, the first questionnaire was completed. The production process of the second questionnaire included uploading the 9 pictures on the wyx platform for editing. After editing, the questionnaire recovery options were set, with the number of answers set to only one for each user, along with submission control to allow the user to preview the answer before submitting it. The settings were confirmed, completing the production of the second questionnaire. The questionnaire was distributed via 20 internet platforms, including WeChat, Baidu, and Zhihu. The respondents clicked a link generated by the wyx platform to access the questionnaire. The 2 questionnaire links were open from 8:00 on 3 October to 24:00 on 13 October 2021, and 8:00 on 15 October to 24:00 on 30 October 2021. The second questionnaire contained all 9 photos with high resolution and quality, generated in random order, and respondents were asked to score them. During this process, respondents could flip back and forth at will and were free to revise their score for any rendering before submitting it. A Likert scale was used, with scores ranging from 1-5, with 1 being \"strongly dislike\" and 5 being \"strongly like\" (Table 4). At the end of the questionnaire, basic demographic information about the respondents was obtained. Before the formal questionnaire, a presurvey was conducted from 28 September to 1 October 2021. A total of 35 participants participated in the presurvey. In addition, 7 architectural experts, including 2 professors of statistics, 3 professors of architecture, and 2 architects from the China University of Mining and Technology, were asked to complete the questionnaire. The presurvey was aimed at testing the questionnaire, verifying the clarity and relevance of the questions, and determining whether the questionnaire needed to be extended. No flaws in the questionnaire were found in the presurvey. The formal survey was conducted from 3-30 October 2021, and the 2 questionnaires were administered. The first questionnaire was carried out from 3-13 October. The link was distributed from 8:00 on 3 October to 24:00 on 13 October 2021, which mainly determined the willingness of respondents to participate and collected their demographic information. Statistical analysis found that 830 respondents were willing to participate. After the collected data from the first questionnaire were sorted, the second questionnaire was conducted from 15-30 October 2021. According to the distribution of demographic characteristics from China's sixth population census, 352 respondents who were willing to participate in the second questionnaire were selected by quota sampling method, and the link was distributed from 8:00 on 15 October to 24:00 on 30 October 2021. A total of 352 questionnaires were distributed, and 349 responses were collected. There were 320 valid questionnaires, and the validity rate was 90.81%. The distribution of demographic characteristics of respondents is shown in Table 5. Statistical analysis found that the demographic distribution was consistent with China's sixth population census, indicating that the survey was representative. \begin{table}
\begin{tabular}{c c} \hline \hline
**Score** & **Description** \\ \hline
1 & Strongly dislike \\
2 & Mildly dislike \\
3 & Neutral \\
4 & Mildly like \\
5 & Strongly like \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Description of scores.