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Endless lines The protagonist of the story, Shi Tsai, is a middle-aged widower who is a father and a mother, on the one hand, running for life, and on the other hand, he has to take care of his young son, who is only three years old. Because he had to take care of his son and his job changed frequently, he was like boiling water everywhere, hence the nickname 'Stone Boy'. He is life, though var dfdPrompt=null; var installPromptDiv=document.getElementById('install-prompt'); function shouldShowInstallPrompt(){const oneDay=168*60*60*1000; const lastClosed=localStorage.getItem('installPromptClosed'); if(lastClosed){const now=Date.now(); return now-lastClosed>oneDay}return true}function showInstallPrompt(){if(dfdPrompt&&shouldShowInstallPrompt()){installPromptDiv.style.display='block'}}function closePrompt(){installPromptDiv.style.display='none'; localStorage.setItem('installPromptClosed',Date.now())}window.addEventListener('beforeinstallprompt',function(e){dfdPrompt=e; e.preventDefault(); showInstallPrompt()}); function addToDesktop(){if(dfdPrompt){dfdPrompt.prompt(); dfdPrompt.userChoice.then(function(choiceResult){console.log(choiceResult.outcome); closePrompt(); dfdPrompt=null})}else{console.log('添加到主屏幕的功能不可用。 ')}}window.onload=showInstallPrompt;