diff --git a/lib/nats_bench/api_size.py b/lib/nats_bench/api_size.py
index b6717c3..c446481 100644
--- a/lib/nats_bench/api_size.py
+++ b/lib/nats_bench/api_size.py
@@ -243,7 +243,10 @@ class NATSsize(NASBenchMetaAPI):
       except Exception as unused_e:  # pylint: disable=broad-except
         test_info = None
       valtest_info = None
+      xinfo['comment'] = 'In this dict, train-loss/accuracy/time is the metric on the train set of CIFAR-10. The test-loss/accuracy/time is the performance of the CIFAR-10 test set after training on the train set by {:} epochs. The per-time and total-time indicate the per epoch and total time costs, respectively.'.format(hp)
     else:
+      if dataset == 'cifar10':
+        xinfo['comment'] = 'In this dict, train-loss/accuracy/time is the metric on the train+valid sets of CIFAR-10. The test-loss/accuracy/time is the performance of the CIFAR-10 test set after training on the train+valid sets by {:} epochs. The per-time and total-time indicate the per epoch and total time costs, respectively.'.format(hp)
       try:  # collect results on the proposed test set
         if dataset == 'cifar10':
           test_info = archresult.get_metrics(
diff --git a/lib/nats_bench/api_test.py b/lib/nats_bench/api_test.py
index 39a8de2..12f9a80 100644
--- a/lib/nats_bench/api_test.py
+++ b/lib/nats_bench/api_test.py
@@ -32,26 +32,46 @@ class TestNATSBench(object):
       benchmark_dir = os.path.join(get_fake_torch_home_dir(), tss_base_names[-1] + '-simple')
     return _test_nats_bench(benchmark_dir, False, fake_random)
 
+  def prepare_fake_tss(self):
+    print('')
+    tss_benchmark_dir = os.path.join(get_fake_torch_home_dir(), tss_base_names[-1] + '-simple')
+    api = NATStopology(tss_benchmark_dir, True, False)
+    return api
+
   def test_01_th_issue(self):
     # Link: https://github.com/D-X-Y/NATS-Bench/issues/1
-    print('')
-    tss_benchmark_dir = os.path.join(get_fake_torch_home_dir(), sss_base_names[-1] + '-simple')
-    api = NATStopology(tss_benchmark_dir, True, False)
+    api = self.prepare_fake_tss()
     # The performance of 0-th architecture on CIFAR-10 (trained by 12 epochs)
     info = api.get_more_info(0, 'cifar10', hp=12)
-    print('The loss on the training set of CIFAR-10: {:}'.format(info['train-loss']))
-    print('The total training time for 12 epochs on CIFAR-10: {:}'.format(info['train-all-time']))
+    # First of all, the data split in NATS-Bench is different from that in the official CIFAR paper.
+    # In NATS-Bench, we split the original CIFAR-10 training set into two parts, i.e., a training set and a validation set.
+    # In the following, we will use the splits of NATS-Bench to explain.
+    print(info['comment'])
+    print('The loss on the training + validation sets of CIFAR-10: {:}'.format(info['train-loss']))
+    print('The total training time for 12 epochs on the training + validation sets of CIFAR-10: {:}'.format(info['train-all-time']))
     print('The per-epoch training time on CIFAR-10: {:}'.format(info['train-per-time']))
     print('The total evaluation time on the test set of CIFAR-10 for 12 times: {:}'.format(info['test-all-time']))
     print('The evaluation time on the test set of CIFAR-10: {:}'.format(info['test-per-time']))
-    # Please note that the splits of train/validation/test on CIFAR-10 in our NATS-Bench paper is different from the original CIFAR paper.
     cost_info = api.get_cost_info(0, 'cifar10')
-    xkeys = ['T-train@epoch',     # The per epoch training cost for CIFAR-10. Note that the training set of CIFAR-10 in NATS-Bench is a subset of the original training set in CIFAR paper.
+    xkeys = ['T-train@epoch',     # The per epoch training time on the training + validation sets of CIFAR-10.
              'T-train@total',
-             'T-ori-test@epoch',  # The time cost for the evaluation on the original test split of CIFAR-10, which is the validation + test sets of CIFAR-10 on NATS-Bench.
+             'T-ori-test@epoch',  # The time cost for the evaluation on CIFAR-10 test set.
              'T-ori-test@total']  # T-ori-test@epoch * 12 times.
     for xkey in xkeys:
       print('The cost info [{:}] for 0-th architecture on CIFAR-10 is {:}'.format(xkey, cost_info[xkey]))
+    
+  def test_02_th_issue(self):
+    # https://github.com/D-X-Y/NATS-Bench/issues/2
+    api = self.prepare_fake_tss()
+    data = api.query_by_index(284, dataname='cifar10', hp=200)
+    for xkey, xvalue in data.items():
+      print('{:} : {:}'.format(xkey, xvalue))
+    xinfo = data[777].get_train()
+    print(xinfo)
+    print(data[777].train_acc1es)
+
+    info_012_epochs = api.get_more_info(284, 'cifar10', hp=200)
+    print(info_012_epochs['train-accuracy'])
  
 
 def _test_nats_bench(benchmark_dir, is_tss, fake_random, verbose=False):
@@ -62,7 +82,7 @@ def _test_nats_bench(benchmark_dir, is_tss, fake_random, verbose=False):
     api = NATSsize(benchmark_dir, True, verbose)
 
   if fake_random:
-    test_indexes = [0, 11, 241]
+    test_indexes = [0, 11, 284]
   else:
     test_indexes = [random.randint(0, len(api) - 1) for _ in range(10)]
 
diff --git a/lib/nats_bench/api_topology.py b/lib/nats_bench/api_topology.py
index fd2914c..50cb74d 100644
--- a/lib/nats_bench/api_topology.py
+++ b/lib/nats_bench/api_topology.py
@@ -222,7 +222,10 @@ class NATStopology(NASBenchMetaAPI):
       except Exception as unused_e:  # pylint: disable=broad-except
         test_info = None
       valtest_info = None
+      xinfo['comment'] = 'In this dict, train-loss/accuracy/time is the metric on the train set of CIFAR-10. The test-loss/accuracy/time is the performance of the CIFAR-10 test set after training on the train set by {:} epochs. The per-time and total-time indicate the per epoch and total time costs, respectively.'.format(hp)
     else:
+      if dataset == 'cifar10':
+        xinfo['comment'] = 'In this dict, train-loss/accuracy/time is the metric on the train+valid sets of CIFAR-10. The test-loss/accuracy/time is the performance of the CIFAR-10 test set after training on the train+valid sets by {:} epochs. The per-time and total-time indicate the per epoch and total time costs, respectively.'.format(hp)
       try:  # collect results on the proposed test set
         if dataset == 'cifar10':
           test_info = archresult.get_metrics(dataset, 'ori-test', iepoch=iepoch, is_random=is_random)
diff --git a/lib/nats_bench/api_utils.py b/lib/nats_bench/api_utils.py
index f858822..06b5617 100644
--- a/lib/nats_bench/api_utils.py
+++ b/lib/nats_bench/api_utils.py
@@ -426,13 +426,13 @@ class NASBenchMetaAPI(metaclass=abc.ABCMeta):
           arch_index, hp))
     self._prepare_info(arch_index)
     if arch_index in self.arch2infos_dict:
-      if hp not in self.arch2infos_dict[arch_index]:
+      if str(hp) not in self.arch2infos_dict[arch_index]:
         raise ValueError('The {:}-th architecture only has hyper-parameters of '
                          '{:} instead of {:}.'.format(
                              arch_index,
                              list(self.arch2infos_dict[arch_index].keys()),
                              hp))
-      info = self.arch2infos_dict[arch_index][hp]
+      info = self.arch2infos_dict[arch_index][str(hp)]
     else:
       raise ValueError('arch_index [{:}] does not in arch2infos'.format(
           arch_index))
@@ -472,7 +472,7 @@ class NASBenchMetaAPI(metaclass=abc.ABCMeta):
     if self.verbose:
       print('{:} Call query_by_index with arch_index={:}, dataname={:}, '
             'hp={:}'.format(time_string(), arch_index, dataname, hp))
-    info = self.query_meta_info_by_index(arch_index, hp)
+    info = self.query_meta_info_by_index(arch_index, str(hp))
     if dataname is None:
       return info
     else: