I am using Javascript. I have little experience with JavaScript and this is my first time trying to write a script. The Chinese text is not properly read in using this method. For example "他是一位非常著名的演员" gets saved as "‰ªñÊò؉∏ĉΩçÈùûÂ∏∏ËëóÂêçÁöÑʺîÂëò.aiff". I also know the pronunciation is not correct using this method. I've read this documentation and have searched around but can't find anything about this issue. I also have no idea how to write an mp3 file.

var app = Application.currentApplication();
app.includeStandardAdditions = true;

var basePath = "path to directory";
var inputPath = basePath + "/input.txt";
var text = app.read(inputPath).split("\n");

for (let i = 0; i < text.length; i++) {
    var recordingPath = basePath + "/" + text[i] + ".aiff";
    app.say(text[i], {savingTo: recordingPath});
    app.say(text[i]);
  }