private async Task <bool> ImproveTech(int techId)
{
if (asyncLock)
{
return(false);
}
try {
asyncLock = true;
var p = await packetWriter.ImproveInstituteTechAsync(techId, InstituteImproveType.PhoThong);
if (p == null || p.HasError)
{
return(false);
}
return(true);
} finally {
asyncLock = false;
}
}